In the olden days we did what was called a "tune up." You replaced the spark plugs, wires, distributor cap, rotor, points, and condenser. If that didn't work you asked a real mechanic.
Oh, yeah, I did a few of those myself back in the '70's and '80's. I remember more than one Quadrajet carb with a bad accelerator pump too. My dad always asked "Did you put a kit in the carb?" He wasn't always wrong!
Tip to find ignition related problems : 4:00 Rear o2 on Bank 2 is rich all the time. This indicates alot of HC. Alot of HC because there wasn't a complete combustion in cyl 2 and 6 because of weak spark. But we must mention it still is stoichiometric mix , so front o2 will have good readings. But the rear o2 reads rich because cat cannot oxidize the big amount of unburned HC ( its suppose to oxidize leftover HC only )
Hey Peter, I have sort of the same problems but they started after swapping the alternator. I put a voltage meter on the o2 sensors and they go from .5 to .9 except bank2 sensor 2 it just stays at 1 doesn’t move. I had the cat plug up on that side so I had them swapped with a set I had off a hemi charger but noticed the loud driver side lifters and something just not right shortly after they were installed. When I get on it it will cackle like a 64 impala with glass packs and rounded tip but ifs not coming from the exhaust but the motor! I also noticed the guy put the cat about 2 ft back further and it’s 2 inches away from that sensor now so maybe he got it to hot welding it ? Thoughts?
This is deja vu all over again... My 2004 2500HD just sat for 6 years and I only plowed with it in the winter... This spring, I put new heads and bump stick in it to drive it more often... I actually even registered it for the first time in years...Same location with the rodent damage... I had 2 chewed through wires and 12 with insulation stripped off... She's been smooth as butter ever since repairs... And ya gotta love the fuel efficient 6.0L.... LOL
Steve the farmer next to us used to raise turkeys and rats would abound. The only justice was when they would eat my freezers' wiring and pay the ultimate price. My '77 C20 350 has an alignment problem: it glides toward gas stations when nearby. You know 20 mpg: 12 on the freeway and 8 in the city. I would probably wish I had your gas mileage of your 6.0.
And that's why people love you...they know you will repair with "no parts required" if you can. Had the same misfire codes on my 06 silverado, a week ago, (it wasn't cylinder specific and my check engine light did work). Had nice MSD wires on it so I assumed the previous owner did a tune-up on it. Nope, previous owner just changed the wires. The spark plugs were a pain to remove and I snapped a plug and rounded a plug hole in the process (they seemed like the original plugs AC Delco). What a pain removing that snapped plug. Great work Ivan!
Did the previous owner run the plugs over 100K miles? Did you have to heli-coil the spark plug hole or did you use something better? I feel for you! What a pain!
@@dogsplantscarsneatstuff176 I am not really sure, but I would bet money they were the original plugs. I bought the truck with 154,000 miles on it. It has about 190 on it now. I would have changed the plugs but the wires look pretty new (MSD). I will never know. It was a learning moment for me. From now on do a complete tune-up when buying a used car. I tried using a thread chaser but ended up using a tap. The tap was enough to clean out the hole without using a heli-coil. So far, so good...runs great with no codes. Fingers are crossed.
@@avasonsyn I am so happy your were able to tap it out instead of installing a heli-coil. That is really contradictory: high end plug wires with unchanged plugs.
it's likely more of a "ford" thing and them reusing very worn out parts. much more of the vintage GM stuff had stronger parts, which would last longer and through a rebuild or two. they knew the GM gearhead folks were more likely to modify and tune for more power, also much of it would have been corvette designed pass-downs. sometimes it makes sense to keep using the costly R&D and same manufactures in greater bulk quantity, than to design "chintzy" parts to cut costs, which often ends in negative returns.
Ivan what I like you always go back to basics . Don't go down the wrong rabbit hole . When I went to GMI =General Motors Institute My teachers always stressed Go back to basics when doing a Diag thanks a good video and a happy customer !!
It's amazing nothing else was malfunctioning after Mickey and his friends got done with that harness. They love that environmentally-friendly insulation!
Cylinders #2 and #6 had the most misfires the world has ever seen! The way it is phrased I initially read it to be literally history as in the world timeline perspective!
I have had some brand new "Autolite" plugs with scratches lengthwise down the porcelain, making the perfect place for the "lightning" to jump and start arcing on high humidity rain spray days. yeah VGG inspired comment. lightning whirler's and hoses. lol
through the camera/video audio, I could hear the spark arcing when you first went under the hood checking drivers bank. lol, maybe my ears are fine tuned to it after so many years.
That's great thing to diagnose the issues with suburu part!! Haha, i have a customer who replaced all oem spark plugs and wires and loom for coils too. He's still getting p0300 misfire, along with po174 lean, with maf issues, he replaced the maf too. I checked and diagnosed it, I'm thinking the intake gasket leak beginning the cause of the problem. He did replace the throttle body too. So I'm trying to find the misfire p0300 issue. He's got 04 chevy silverado 5.3 v8.
@@AP9311 Yes, check the fuel trims especially, if they are high (in the positive) it's more than likely lower intake gaskets leaking, best guess based on experience without seeing it in person. Also, I've seen them need to have the cam/crank correlation relearned to eliminate missing
My Washing machine stopped working years ago....i fix stuff so started looking at it...lifted the top to get at the control panel....a whole family of mice were looking out at me!! I evicted the squatters and found a couple chewed wires in a ribbon cable....then closed up all entrances to machine and dryer too!! Damn Mice!!
I try to use NGK in every situation possible. When NGK is not available for a particular application and I am forced to use Ac Delco, Motorcraft, etc., I always bring a dvom and check the resistance of each plug and I typically see plugs that have resistance of up to 8-13K ohms!! and have to go through many boxes to find acceptable resistance of 4-5k ohms. I very rarely ever find an NGK with a resistor higher than 5500 ohms.
My son had a similar vintage Avalanche with the same motor that had the same problem. He replaced the intake gaskets and o2 sensors, still had the check engine light. At idle the engine was dead smooth. Had my nephew check it with his scanner and he found #6 wasn't contributing at all. Replaced the plug and it was fine. Odd that at idle you could set a half full beer bottle on the hood and it didn't show any vibration.
I was doing an internal leak diagnosis and repair that entails plugging the high pressure ports on a fuel accumulator (common rail) to eliminate injectors. You'd be amazed at how smoothly a big v8 diesel can idle with only two cylinders powering it.
I chased a miss on a h2 for a while once. I just knew it was electronic....wrong... after checking everything 3 times I pulled the valve cover and found a broken valve spring.... I aired up the cylinder and replaced that valve spring and she was good to go....sometimes I doubt myself and that was a good example lol
Wait, what, Honda makes tape rodents hate? Must be infused with Ghost pepper sauce, but that would only work in the central and eastern states, we have some tough rodents in Arizona that would not bother them. :)
Wow sat for 5 years and engine is water locked.siezed? Was it parked in a pond? LOL. Or are you saying this is all condensation-related? Thats crazy! I would have pulled and cleaned it up versus a Jasper but maybe the owner is not capable of that. OMG Mice! Another Russian no parts required diagnostic, stellar video.
I am a lady w a multi meter checking for a parasitic Draw and I always want to look under my fuse box but I dont. because I'm clueless w no diagram...but, a mechanic should check those areas or peak. I don't understand it..when a check engine should be on, blink or whatever. How can we not be shanked out of money at a shop? It's scary but we see that applied knowledge, investigation and good tools are the real keys for auto repair
Looks like autolite plugs. I have generally found them to not be happy in a GM. Not sure what the magic sauce is but AC plugs seems to do the best in a GM product.
You need some really hot days, I live in Northern Michigan and we are having some 80 and 85 degree weather I work in a factory with lots of electric motors and heat sources . I love to watch you work on engines shirtless like that one time a couple years ago sweat was dripping off your brow and you were complaining a little about the heat. I don't work shirtless wish I could but but my boss saw my bare chest once ,I was wiping sweat off my brow and he saw the big mastectomy scars and all he could say was " Don't do that again I almost barfed". It's ok don't be sorry for me, I don't have to worry about breast cancer now, but you look great, stay healthy.
Thank you for the kind words Roberta! This country is held up by hard workers like yourself. I've been to quite a few industrial plants in my last job and it's brutal! Hats off to you! 💪🙂
@@PineHollowAutoDiagnostics You're welcome, I sometimes laugh at the new hires after they quit from only working 2 hours, I tell 'em if you don't have an education it will only get worse, go to trade school or something.
This is identical to the issue I had with a truck I just bought from auction...only after I found and corrected the initial multi cylinder misfire I got from the entire passenger side bank of fuel injectors stuck closed. It was like traveling down the road of neglected maintenance. First was the injectors, which cleaned it up enough to diagnose ignition issues, then the plugs and wires, then a lazy O2 sensor. Every other issue the truck had which seemed to be a repeat of finding an initial issue only to find a secondary issue. Not really a nightmare, but definitely annoying, especially troubleshooting the headlights only to find they removed every single bulb. That saved them under $20 total. Also, why does it seem to always be cylinder #6 on LQ/LS engines? What gives?
Pretty cool stuff, I was thinking a bad plug, 05 and there about were not great years for automotive wiring, everything was fine unless you had mice around
Reading the tile, I was suspecting a bad engine belt tensioner. Learned that in a Gates Belt training session at EVT recertification. Seen a couple of bad tensioners cause #6 and #8 to misfire on 5.3 GM engines. Not sure if you’ve ever ran into that Ivan.
Genius !! Now this is the input I love to see in the comments first had situations that are real not just my friends truck did blah blah blah thank you sir I couldn’t figure mine out and I just installed a mechman alternator that has a smaller pulley but have. Not yet put on a shorter belt because it seemed good after moving the tensioner down a bit it had kind of a hard spot in it but stayed down. At first start tho it tossed it off and my dumb ass was sitting there looking at it like why isn’t it charging and why’s my temp rising then notice I could still read the name on the pulley becsuse it wasn’t spinning haha it had fallen off the fan pulley. I’m going to go install that new shorter belt rn and see what’s up thank tou
2010 Chevy Aveo 1.6. Dead miss on accel. Engine light on but NOT for misfires, for a stupid evap vent sol. Nothing pending. #3 plug cracked. Point is do not rely on the engine computer to tell you codes on regarding misfires 100% of the time. Also in IL, they will reject any vehicle that fails the bulb test, or has that code.
man i laughed when you opened up that power center...what a mess. if a vehicle sat for that long, best to check all openings and boxes and the headliner. I was given a Jetta because 'it doesn't run right'...same problem, except rabbits.
The score after so many years...Mice 6, Truck 0. Another gm design disaster. You can't design a mouse proof fuse panel!?! And, you want $60+k for a new one...No, no, no and HELL NO!!! Keep them all!!! Nice finish Ivan.
I got a good one towed in today. I was contemplating whether I should record and post. It's a 2016 dodge that stalls at a stop or decel no codes or symptoms leading up to the stall. No codes after the stall and restarts, it will drive fine until it sneaks up again. It can run fine for days or cut out 3 times in a row. The car has been to 3 shops and many parts fired at it. I alread have a good ideal on something I seen during the test drive. I really wanted to do it to plug Scannerdanner. Without that man I wouldn't own what I own. I was changing tires before I learned his teaching. Now I'm trouble shooting for other shops how crazy is that.
@@PineHollowAutoDiagnostics yes, APP2 (pedal position sensor) was dropping out. I'm surprised I caught it upon the test drive. It was dropping out super fast, If you blinked you missed it. So I graphed APP1 and 2 with the scanner. then it was alot clearer APP2 was dropping like crazy. I scoped it at the gas pedal then the pcm no dropouts. It looked great on the scope. When I went to unplug the pcm is when I found the problem the connector was seized in the pcm. I finally got it free with WD and time. I cleaned up best to my ability (green crusties) and that did the trick. The thing I dont understand is how it didn't set a code. The customer did state some times it would bing the light upon stalling with a red lighting bolt and others it wouldn't. It never set a code for me and it was clearly dropping out. It looked like a failing abs sensor when you get that quick glitch. If I didn't have a scope I wouldn't of been able to pinpoint it. After I found the problem I did notice a new Throttle body plugs coils, injector MAF and the customer stated a couple other things.
@@lovetolearn5253 Interesting. Never trust scan data though, Chryslers are weird, and scan data will show a regular pulse on APP2, even though it's not real. Always trust your scope. No codes and good scope signals says to me that the problem is still hiding somewhere :)
@@PineHollowAutoDiagnostics unfortunately it acted up again today but this time it threw a code and the red bolt of light came on. Good thing the customers didnt pick it up yet. It actually has 3 codesp0642 sensor reference low p1618 erratic p2122 app. I'll keep you informed. I'm glad you told me about the scan data thing. Its something to keep in the back of my head
Great content. My 04 Tahoe has a p0650 too. Sometimes the cel works, sometimes it doesn't. Im thinking I have a similar problem.....does the brown and white wire run from the pcm to under the fuse box & then to the cluster? You said its a ground circuit controlled by pcm so there's no fuse right? This video can definitely help me.
This is why it pays to take care of the local feral cat community or a couple if they hang around your house, a little food and water and they are the best rodent deterrents you can find, a house cat might in some cases will do the job but they can become too complacent and used to cat food where as a strictly outdoor cat is meaner. One time I had both in a little black female, she was an excellent mouser, the only thing is they want to share their kill with you and will leave you the occasional head at your door but you get used to it.
PCM connections were under the fuses? Do you still feel that you cannot bidirectionally control the check engine light now that all wires are repaired?
Ivan Love your channel always expect the unexpected,I have a question I know you have several scan tools, I my self have a Autel 906 ,I’ve notice you using a think pad which seems to have more capability ,would you recommend that over a launch or a Autel at that price point. Thanks in advance.
Don't you just love customers who breathe down the back of your neck while your trying to diagnose their car? Tell him to go for a nature walk, I'll call you when i'm done. lol. 2008 1500 4.8 I had a p0300 but scanner showed misfire on #6 and everything checked out ok, I did put plugs in it though but still the miss was there and the cel was flashing but all the pids looked great, I checked inj. and spark with scope everything was perfect, just off idle it was fine, I even tried a new intake gasket, nothing so then I put half a can of SeaFoam in the oil and drove it about 10 miles when I pulled back into the driveway I thought the thing died it was running so smooth, no cel no misfires no nothing, crazy lifter is all i can figure. Peace!!
Many Toyota owners go by what a mechanic says "do a tune up and replace all coil packs and plug wires" NO NO NO. Just leave OEM toyota coil packs and wires alone. My friend's 03 Taco gave a misfire code (has aftermarket crappy wires). We replaced all plug wires with denso and no more misfire.
Textbook example why firing the parts cannon can end up being a horrific solution to the war that is auto repair. All hail General Ivan! Hahahaha. Well done yet again. A smart exterminator would give you a referral fee for all the critter evidence you run across at people’s homes.
Freakin rodents! I worked at an university in Michigan as a carpenter. The squirrels ate the wires in dozens of cooling systems on roofs costing thousands and thousands of dollars. We had to build wire cages with doors around all this equipment to stop them. Some of them were quite large and intricate. Told the boss that some bait and a couple high power pellet guns would do the same, but no. They couldn’t even poison them. I said put out the poison and tell everyone it’s for rats!
I was starting to think a fuse under the hood was bad but nope I was way off(like the pcm fuse that runs the check engine light if that fuse is bad the check engine light won’t come up on the dash when you turn the key on)
Good job ! I know you’re not making the money because you told the customer that needs spark plugs and wires so that’s why the customer will do it himself and save the tuneup money .
that is why so many shops that only care about money will only say they need to do a diagnostic to find the problem @ $100 cost that can only be reduced on the repair if they do the work .. I would happily pay someone who is honest and Not greedy to do a big repair job , but will always pass on the greedy shops that won't offer any help without a money fee
@@badboytommy187 sad but true , but many shops are not honest , they will say a part needs replaced when it is good just to increase the fee , you can see many videos online here that they have hidden camera recording the ' service ' with the customer being charged for services that were not done .... remember Jiffy lube scandal ? Midas & Meineke and many other well known shops Shops like that make it even harder for small shops , it takes a while to find a good one that does good work and are honest
@@danzare5638 "so many shops that only care about money" wait what? What exactly do you think mechanics are doing car repairs for? Especially with the internet and almost everything being DIY attemptable nowadays... 90% of 'customers' would just say "ok thanks" and do it themselves, if it wasn't for a diag fee.
Simple illustration , computer code gets set when the gas cap is not fully closed and seated properly , Mechanic charges $100 to scan for codes and it reveals all you need to do is retighten the gas cap …. If you would feel good about charging any money to reseat a gas cap , nothing good could be said of a person that would
Dude I love you bits , but please why did you not solder new cables in ? Ohhhhh theres a difference between a cable and a wire . Still love your turn of phrase From Brighton, Great Britain.
I put all new AC Delco double platinum plugs and wires on my Buick Regal GS with the 3800 and now have misfires. Put in Bosch copper plugs and checked all wires, some weren't even crimped correctly... Now it runs kinda OK, only small misfires under high load low rpms. Very disappointed by AC Delco, a brand I used to like a lot.
Years ago they had Bosch platinums with a rebate and I put them every 80k miles in my 2002 lesabre. Never had a problem. This year at 230k I got rebates on delco iridiums from Napa and GM hope they turn out oK. I probably should have stayed with Bosch.
I’ve got a 2003 gmc 2500hd with a misfire on cylinder 1 and 8 mainly no codes or light, I seen my bank 1 sensor 2 o2 has 0.03 mv the upstream seem fine. I know the o2 is probably bad but is that what’s causing the misfires?
Flex fuel ? Yea ! Put that E85 in there ! It's dollar cheaper ! Brush off the 02s , plugs , coils , Injectors dirty ? Evap working ? Stuck valve ? Wiring ? Grounded ?
In the olden days we did what was called a "tune up." You replaced the spark plugs, wires, distributor cap, rotor, points, and condenser. If that didn't work you asked a real mechanic.
LMAO.
Still remember the Motorcraft DKF-10 kit for an F-Code Mustang I had.
I still do that on my 66 f100
If that didn't work then you checked the timing chain.
Oh, yeah, I did a few of those myself back in the '70's and '80's. I remember more than one Quadrajet carb with a bad accelerator pump too. My dad always asked "Did you put a kit in the carb?" He wasn't always wrong!
Tip to find ignition related problems : 4:00 Rear o2 on Bank 2 is rich all the time. This indicates alot of HC. Alot of HC because there wasn't a complete combustion in cyl 2 and 6 because of weak spark. But we must mention it still is stoichiometric mix , so front o2 will have good readings. But the rear o2 reads rich because cat cannot oxidize the big amount of unburned HC ( its suppose to oxidize leftover HC only )
HC?
@@dumbeezy5480 hydrocarbons
Hey Peter, I have sort of the same problems but they started after swapping the alternator. I put a voltage meter on the o2 sensors and they go from .5 to .9 except bank2 sensor 2 it just stays at 1 doesn’t move. I had the cat plug up on that side so I had them swapped with a set I had off a hemi charger but noticed the loud driver side lifters and something just not right shortly after they were installed. When I get on it it will cackle like a 64 impala with glass packs and rounded tip but ifs not coming from the exhaust but the motor! I also noticed the guy put the cat about 2 ft back further and it’s 2 inches away from that sensor now so maybe he got it to hot welding it ? Thoughts?
This is deja vu all over again... My 2004 2500HD just sat for 6 years and I only plowed with it in the winter... This spring, I put new heads and bump stick in it to drive it more often... I actually even registered it for the first time in years...Same location with the rodent damage... I had 2 chewed through wires and 12 with insulation stripped off... She's been smooth as butter ever since repairs... And ya gotta love the fuel efficient 6.0L.... LOL
Steve the farmer next to us used to raise turkeys and rats would abound. The only justice was when they would eat my freezers' wiring and pay the ultimate price. My '77 C20 350 has an alignment problem: it glides toward gas stations when nearby. You know 20 mpg: 12 on the freeway and 8 in the city. I would probably wish I had your gas mileage of your 6.0.
My 02 2500HD 6.0 gets a steady 24mpg and i am not light on the go pedal, meanwhile my 04 Cadillac Deville gets only 21mpg, makes no sense, lol
@@mattcat231 That's pretty incredible... My average is just about 15mpg if I'm going downhill both ways... LOL
@@mattcat231 Are you getting 24 mpg going 75mph? You must be living right!
@@steveo6631 My dad would add to downhill with the key off and over a cliff.
And that's why people love you...they know you will repair with "no parts required" if you can. Had the same misfire codes on my 06 silverado, a week ago, (it wasn't cylinder specific and my check engine light did work). Had nice MSD wires on it so I assumed the previous owner did a tune-up on it. Nope, previous owner just changed the wires. The spark plugs were a pain to remove and I snapped a plug and rounded a plug hole in the process (they seemed like the original plugs AC Delco). What a pain removing that snapped plug. Great work Ivan!
Did the previous owner run the plugs over 100K miles? Did you have to heli-coil the spark plug hole or did you use something better? I feel for you! What a pain!
@@dogsplantscarsneatstuff176 I am not really sure, but I would bet money they were the original plugs. I bought the truck with 154,000 miles on it. It has about 190 on it now. I would have changed the plugs but the wires look pretty new (MSD). I will never know. It was a learning moment for me. From now on do a complete tune-up when buying a used car.
I tried using a thread chaser but ended up using a tap. The tap was enough to clean out the hole without using a heli-coil. So far, so good...runs great with no codes. Fingers are crossed.
@@avasonsyn I am so happy your were able to tap it out instead of installing a heli-coil. That is really contradictory: high end plug wires with unchanged plugs.
Explain "Rounded a plug hole"?
Nice troubleshooting and I see you went a little nuts with that fuse box. 🤣🤣
Oh no a Jasper engine if it's anything like the one on Ford TechMakulocos channel I can't even begin to imagine what could be wrong
I just saw that video earlier today and thought the same thing 😆 Jasper engines 👎
it's likely more of a "ford" thing and them reusing very worn out parts. much more of the vintage GM stuff had stronger parts, which would last longer and through a rebuild or two.
they knew the GM gearhead folks were more likely to modify and tune for more power, also much of it would have been corvette designed pass-downs. sometimes it makes sense to keep using the costly R&D and same manufactures in greater bulk quantity, than to design "chintzy" parts to cut costs, which often ends in negative returns.
@@notsureigaf Yeah it was dreadful I've never seen something so bad in my life
@@throttlebottle5906 Never knew that
Ivan what I like you always go back to basics . Don't go down the wrong rabbit hole . When I went to GMI =General Motors Institute My teachers always stressed Go back to basics when doing a Diag thanks a good video and a happy customer !!
It's amazing nothing else was malfunctioning after Mickey and his friends got done with that harness. They love that environmentally-friendly insulation!
Cylinders #2 and #6 had the most misfires the world has ever seen! The way it is phrased I initially read it to be literally history as in the world timeline perspective!
The Mouse Infestation Light (MIL).
God I wish you live within 50 miles of Louisville ky. You are a resource!
I have had some brand new "Autolite" plugs with scratches lengthwise down the porcelain, making the perfect place for the "lightning" to jump and start arcing on high humidity rain spray days.
yeah VGG inspired comment. lightning whirler's and hoses. lol
They are counterfeit plugs cause that came off Amazon which sell that crap
through the camera/video audio, I could hear the spark arcing when you first went under the hood checking drivers bank. lol, maybe my ears are fine tuned to it after so many years.
That's great thing to diagnose the issues with suburu part!! Haha, i have a customer who replaced all oem spark plugs and wires and loom for coils too. He's still getting p0300 misfire, along with po174 lean, with maf issues, he replaced the maf too. I checked and diagnosed it, I'm thinking the intake gasket leak beginning the cause of the problem. He did replace the throttle body too. So I'm trying to find the misfire p0300 issue. He's got 04 chevy silverado 5.3 v8.
Take a look at the fuel trims and oxygen sensor activity like I did in the beginning of this vid :)
@@PineHollowAutoDiagnostics i will check that.
@@AP9311 Yes, check the fuel trims especially, if they are high (in the positive) it's more than likely lower intake gaskets leaking, best guess based on experience without seeing it in person. Also, I've seen them need to have the cam/crank correlation relearned to eliminate missing
My Washing machine stopped working years ago....i fix stuff so started looking at it...lifted the top to get at the control panel....a whole family of mice were looking out at me!! I evicted the squatters and found a couple chewed wires in a ribbon cable....then closed up all entrances to machine and dryer too!!
Damn Mice!!
many people think dieelectric grease is a conductor but it is not, it is to keep the boot from seizing onto the plug ceramic, not to conduct spark.
@T.J. Kong yes but it attracts dust and dirt and eventually becomes a gummy crud, so take your choice, ha
I try to use NGK in every situation possible. When NGK is not available for a particular application and I am forced to use Ac Delco, Motorcraft, etc., I always bring a dvom and check the resistance of each plug and I typically see plugs that have resistance of up to 8-13K ohms!! and have to go through many boxes to find acceptable resistance of 4-5k ohms. I very rarely ever find an NGK with a resistor higher than 5500 ohms.
Me also, NGK stuff on my 97 Grand Cherokee 4.0 & my 2 Early Gen Camaro's.
My son had a similar vintage Avalanche with the same motor that had the same problem. He replaced the intake gaskets and o2 sensors, still had the check engine light. At idle the engine was dead smooth. Had my nephew check it with his scanner and he found #6 wasn't contributing at all. Replaced the plug and it was fine. Odd that at idle you could set a half full beer bottle on the hood and it didn't show any vibration.
I was doing an internal leak diagnosis and repair that entails plugging the high pressure ports on a fuel accumulator (common rail) to eliminate injectors. You'd be amazed at how smoothly a big v8 diesel can idle with only two cylinders powering it.
I chased a miss on a h2 for a while once. I just knew it was electronic....wrong... after checking everything 3 times I pulled the valve cover and found a broken valve spring.... I aired up the cylinder and replaced that valve spring and she was good to go....sometimes I doubt myself and that was a good example lol
Need some of that Honda rodent tape.
Toyota AFAIK
Wait, what, Honda makes tape rodents hate? Must be infused with Ghost pepper sauce, but that would only work in the central and eastern states, we have some tough rodents in Arizona that would not bother them. :)
Wow sat for 5 years and engine is water locked.siezed? Was it parked in a pond? LOL. Or are you saying this is all condensation-related? Thats crazy! I would have pulled and cleaned it up versus a Jasper but maybe the owner is not capable of that. OMG Mice! Another Russian no parts required diagnostic, stellar video.
I am a lady w a multi meter checking for a parasitic Draw and I always want to look under my fuse box but I dont.
because I'm clueless w no diagram...but, a mechanic should check those areas or peak. I don't understand it..when a check engine should be on, blink or whatever. How can we not be shanked out of money at a shop? It's scary but we see that applied knowledge, investigation and good tools are the real keys for auto repair
Looks like autolite plugs. I have generally found them to not be happy in a GM. Not sure what the magic sauce is but AC plugs seems to do the best in a GM product.
Looks like Ivan has the Mouse sucker 3000 on the job... Sweet!
I like the way you explain the wiring diagrams! Awesome video Ivan!!!!
Good call on the misfire wire swap. With Fords it's coil swap and "take-a-chance" hot spark plugs with aluminum heads!
You need some really hot days, I live in Northern Michigan and we are having some 80 and 85 degree weather I work in a factory with lots of electric motors and heat sources . I love to watch you work on engines shirtless like that one time a couple years ago sweat was dripping off your brow and you were complaining a little about the heat. I don't work shirtless wish I could but but my boss saw my bare chest once ,I was wiping sweat off my brow and he saw the big mastectomy scars and all he could say was " Don't do that again I almost barfed". It's ok don't be sorry for me, I don't have to worry about breast cancer now, but you look great, stay healthy.
Thank you for the kind words Roberta! This country is held up by hard workers like yourself. I've been to quite a few industrial plants in my last job and it's brutal! Hats off to you! 💪🙂
@@PineHollowAutoDiagnostics You're welcome, I sometimes laugh at the new hires after they quit from only working 2 hours, I tell 'em if you don't have an education it will only get worse, go to trade school or something.
What a great story Roberta, you are truly an inspiration!
Lucky customer. Thanks Ivan!
I don't know what makes more money. The Salt used in the rust belt or the gritters looking for winter homes.
Rodent damage, and stagnant aging... That'll take the clap out of that Chevy's thunder!
I always replace those wires when I replace the plugs on the 4.8, 5.3, and 6.0. I never had good luck trying to reuse them.
Hi Ivan Aussie guy here ;) great vid enjoyed watching you sir are fantastic..
I learn so much in these NPR videos. Thank you Ivan.
some one must have trained that mouse lol
This is identical to the issue I had with a truck I just bought from auction...only after I found and corrected the initial multi cylinder misfire I got from the entire passenger side bank of fuel injectors stuck closed. It was like traveling down the road of neglected maintenance. First was the injectors, which cleaned it up enough to diagnose ignition issues, then the plugs and wires, then a lazy O2 sensor. Every other issue the truck had which seemed to be a repeat of finding an initial issue only to find a secondary issue. Not really a nightmare, but definitely annoying, especially troubleshooting the headlights only to find they removed every single bulb. That saved them under $20 total. Also, why does it seem to always be cylinder #6 on LQ/LS engines? What gives?
Pretty cool stuff, I was thinking a bad plug, 05 and there about were not great years for automotive wiring, everything was fine unless you had mice around
It's always number 2 what I did to mine was run a bottle of water thru vacuum hose and now runs great
Acorns! Squirrels! That's just hilarious!! Nice diagnosis!
Nice diag Ivan!
Absolutely fantastic diagnostics
Reading the tile, I was suspecting a bad engine belt tensioner. Learned that in a Gates Belt training session at EVT recertification.
Seen a couple of bad tensioners cause #6 and #8 to misfire on 5.3 GM engines. Not sure if you’ve ever ran into that Ivan.
Genius !! Now this is the input I love to see in the comments first had situations that are real not just my friends truck did blah blah blah thank you sir I couldn’t figure mine out and I just installed a mechman alternator that has a smaller pulley but have. Not yet put on a shorter belt because it seemed good after moving the tensioner down a bit it had kind of a hard spot in it but stayed down. At first start tho it tossed it off and my dumb ass was sitting there looking at it like why isn’t it charging and why’s my temp rising then notice I could still read the name on the pulley becsuse it wasn’t spinning haha it had fallen off the fan pulley. I’m going to go install that new shorter belt rn and see what’s up thank tou
2010 Chevy Aveo 1.6. Dead miss on accel. Engine light on but NOT for misfires, for a stupid evap vent sol. Nothing pending. #3 plug cracked. Point is do not rely on the engine computer to tell you codes on regarding misfires 100% of the time. Also in IL, they will reject any vehicle that fails the bulb test, or has that code.
man i laughed when you opened up that power center...what a mess. if a vehicle sat for that long, best to check all openings and boxes and the headliner. I was given a Jetta because 'it doesn't run right'...same problem, except rabbits.
Little mouse had some nice small acorns. Or were those beechnuts?
I'm betting the guy went straight home and bought cheapo plug wires.
The dealer would tell you, That's normal.
yeah lol
Hi Ivan , awesome vid buddy . I have the same truck and too afraid to look at mine for a mice infestation 😅😅
I love your trouble shooting techniques..you're a beast
I have an 06 silverado. Runs perfectly. Check engine light has been on for years......
The score after so many years...Mice 6, Truck 0.
Another gm design disaster. You can't design a mouse proof
fuse panel!?! And, you want $60+k for a new one...No, no, no and
HELL NO!!! Keep them all!!! Nice finish Ivan.
15:20 that looks like a huge fire hazard. Amazing that the truck did not burn down yet. :O
And didn't blow any fuses!
@@PineHollowAutoDiagnostics mindblowing. Like it wanted to die. But the truck doesnt look too bad overall.
I'm starting to suspect that Yvan is raising rodent in his spare time LOL.
Lessons of the day. Rodents cause a lot of damage to cars and maintenance using good parts is important.
I forgot it had been sitting for some time!🥴
What a nest though!😳
Autolite plugs are great for lawn mowers. I think.
Actually they're good for nothing they're made by FRAM
Yeah, Oughtolite but don’t.
Junk. Had a new set in a v twin, and had one die after only 5 minutes of use
@@whatsnewonthemountain Comment of the day, I laughed hard and im still laughing, lol, oughtalite, lol
you couldn't pay me to put them in anything but a vacuum or heater hose as a block off
Great video! thanks for the show!
Don’t laugh with the Subaru and Chevy Ivan. In India I believe the Forester was rebranded as a Chevrolet product.
Well thought out diag, nice job.
Man, I gotta stop reading the comments before I watch the video and spoil the ending.
Did the bulb get pulled? Can't wait to see, love your diags ivan!
Oh, the other automotive bad guy was at fault!
I got a good one towed in today. I was contemplating whether I should record and post. It's a 2016 dodge that stalls at a stop or decel no codes or symptoms leading up to the stall. No codes after the stall and restarts, it will drive fine until it sneaks up again. It can run fine for days or cut out 3 times in a row. The car has been to 3 shops and many parts fired at it. I alread have a good ideal on something I seen during the test drive. I really wanted to do it to plug Scannerdanner. Without that man I wouldn't own what I own. I was changing tires before I learned his teaching. Now I'm trouble shooting for other shops how crazy is that.
Cool! Did you figure it out?
@@PineHollowAutoDiagnostics yes, APP2 (pedal position sensor) was dropping out. I'm surprised I caught it upon the test drive. It was dropping out super fast, If you blinked you missed it. So I graphed APP1 and 2 with the scanner. then it was alot clearer APP2 was dropping like crazy. I scoped it at the gas pedal then the pcm no dropouts. It looked great on the scope. When I went to unplug the pcm is when I found the problem the connector was seized in the pcm. I finally got it free with WD and time. I cleaned up best to my ability (green crusties) and that did the trick. The thing I dont understand is how it didn't set a code. The customer did state some times it would bing the light upon stalling with a red lighting bolt and others it wouldn't. It never set a code for me and it was clearly dropping out. It looked like a failing abs sensor when you get that quick glitch. If I didn't have a scope I wouldn't of been able to pinpoint it. After I found the problem I did notice a new Throttle body plugs coils, injector MAF and the customer stated a couple other things.
@@lovetolearn5253 Interesting. Never trust scan data though, Chryslers are weird, and scan data will show a regular pulse on APP2, even though it's not real. Always trust your scope. No codes and good scope signals says to me that the problem is still hiding somewhere :)
@@PineHollowAutoDiagnostics unfortunately it acted up again today but this time it threw a code and the red bolt of light came on. Good thing the customers didnt pick it up yet. It actually has 3 codesp0642 sensor reference low p1618 erratic p2122 app. I'll keep you informed. I'm glad you told me about the scan data thing. Its something to keep in the back of my head
@@lovetolearn5253 excellent! Now catch the glitch with your scope 👌👍
First thing emission tester does is turn the key to see the light is not disabled which is an automatic fail
Great content. My 04 Tahoe has a p0650 too. Sometimes the cel works, sometimes it doesn't. Im thinking I have a similar problem.....does the brown and white wire run from the pcm to under the fuse box & then to the cluster? You said its a ground circuit controlled by pcm so there's no fuse right? This video can definitely help me.
This is why it pays to take care of the local feral cat community or a couple if they hang around your house, a little food and water and they are the best rodent deterrents you can find, a house cat might in some cases will do the job but they can become too complacent and used to cat food where as a strictly outdoor cat is meaner. One time I had both in a little black female, she was an excellent mouser, the only thing is they want to share their kill with you and will leave you the occasional head at your door but you get used to it.
Great video Ivan thanks for sharing.
PCM connections were under the fuses? Do you still feel that you cannot bidirectionally control the check engine light now that all wires are repaired?
Good job I like no parts Required...
Like #596
Thanks for the video!
Life is a learning curve!
Hindsight is 20-15!
Ivan Love your channel always expect the unexpected,I have a question I know you have several scan tools, I my self have a Autel 906 ,I’ve notice you using a think pad which seems to have more capability ,would you recommend that over a launch or a Autel at that price point. Thanks in advance.
So far I have not found any better scanner than the ThinkTool Pros, especially for the price!
Is that a 6.0 liter
Don't you just love customers who breathe down the back of your neck while your trying to diagnose their car? Tell him to go for a nature walk, I'll call you when i'm done. lol. 2008 1500 4.8 I had a p0300 but scanner showed misfire on #6 and everything checked out ok, I did put plugs in it though but still the miss was there and the cel was flashing but all the pids looked great, I checked inj. and spark with scope everything was perfect, just off idle it was fine, I even tried a new intake gasket, nothing so then I put half a can of SeaFoam in the oil and drove it about 10 miles when I pulled back into the driveway I thought the thing died it was running so smooth, no cel no misfires no nothing, crazy lifter is all i can figure. Peace!!
Many Toyota owners go by what a mechanic says "do a tune up and replace all coil packs and plug wires" NO NO NO. Just leave OEM toyota coil packs and wires alone. My friend's 03 Taco gave a misfire code (has aftermarket crappy wires). We replaced all plug wires with denso and no more misfire.
For sure OEM is best. But even OEM coil packs go bad on some Toyotas after 15 years or so.
Textbook example why firing the parts cannon can end up being a horrific solution to the war that is auto repair. All hail General Ivan! Hahahaha. Well done yet again. A smart exterminator would give you a referral fee for all the critter evidence you run across at people’s homes.
Freakin rodents! I worked at an university in Michigan as a carpenter. The squirrels ate the wires in dozens of cooling systems on roofs costing thousands and thousands of dollars. We had to build wire cages with doors around all this equipment to stop them. Some of them were quite large and intricate. Told the boss that some bait and a couple high power pellet guns would do the same, but no. They couldn’t even poison them. I said put out the poison and tell everyone it’s for rats!
mouse you say, it looks to me like a squirrel infestation. I got those little boogers everywhere. Oh great job
I was starting to think a fuse under the hood was bad but nope I was way off(like the pcm fuse that runs the check engine light if that fuse is bad the check engine light won’t come up on the dash when you turn the key on)
Of course this is only temporary; unless it works
My kind of trucks right there
Aren’t misfire monitors disabled at low fuel levels ??…less than 15%?
Good job ! I know you’re not making the money because you told the customer that needs spark plugs and wires so that’s why the customer will do it himself and save the tuneup money .
that is why so many shops that only care about money will only say they need to do a diagnostic to find the problem @ $100 cost that can only be reduced on the repair if they do the work .. I would happily pay someone who is honest and Not greedy to do a big repair job , but will always pass on the greedy shops that won't offer any help without a money fee
@@danzare5638 I agree what you saying . But you know customer never think of you honesty ? Anything over $300 they think you’re robbing them .😯
@@badboytommy187 sad but true , but many shops are not honest , they will say a part needs replaced when it is good just to increase the fee , you can see many videos online here that they have hidden camera recording the ' service ' with the customer being charged for services that were not done .... remember Jiffy lube scandal ? Midas & Meineke and many other well known shops
Shops like that make it even harder for small shops , it takes a while to find a good one that does good work and are honest
@@danzare5638 "so many shops that only care about money" wait what? What exactly do you think mechanics are doing car repairs for? Especially with the internet and almost everything being DIY attemptable nowadays... 90% of 'customers' would just say "ok thanks" and do it themselves, if it wasn't for a diag fee.
Simple illustration , computer code gets set when the gas cap is not fully closed and seated properly , Mechanic charges $100 to scan for codes and it reveals all you need to do is retighten the gas cap …. If you would feel good about charging any money to reseat a gas cap , nothing good could be said of a person that would
Will that evap make it go into reduced engine and there is no other clothes other than that
Dude I love you bits , but please why did you not solder new cables in ?
Ohhhhh theres a difference between a cable and a wire .
Still love your turn of phrase
From
Brighton,
Great Britain.
When did you pick up that scar on your left arm?
When in doubt always look for rodent damage! Hey at least we now know why the Check Engine light was MIA.
First thing is throw all those Autolite plugs in the trash and put some Delco plugs in it. Ha! I just typed this when you made that statement. LOL!!
I feel like its dangerous having your hand so close to the high voltage haha.
Gives you a great shock if you get bitten
I put all new AC Delco double platinum plugs and wires on my Buick Regal GS with the 3800 and now have misfires. Put in Bosch copper plugs and checked all wires, some weren't even crimped correctly... Now it runs kinda OK, only small misfires under high load low rpms. Very disappointed by AC Delco, a brand I used to like a lot.
NGK Plugs and wires
Years ago they had Bosch platinums with a rebate and I put them every 80k miles in my 2002 lesabre. Never had a problem. This year at 230k I got rebates on delco iridiums from Napa and GM hope they turn out oK. I probably should have stayed with Bosch.
nice job Ivan!
i pick up 99 silverado and it sat for 5 years and mine was so bad i junk it well parts truck now. i pick up a 02 little mice issues.
Wowww what a beautiful peoperty
Good stuff.
My truck is behaving pretty much exactly the same way but changing the plugs and wires didn’t fix it
I swear that mice all know about this vintage of truck.
Pretty nice. What's the chances of mice getting the wire for the MIL?
Another great video.
I bought a 10 warranty plan for my truck, it on needs food and a litter box and no rodent issues🤷♂️
thanks IVAN
Another great job 👍
I’ve got a 2003 gmc 2500hd with a misfire on cylinder 1 and 8 mainly no codes or light, I seen my bank 1 sensor 2 o2 has 0.03 mv the upstream seem fine. I know the o2 is probably bad but is that what’s causing the misfires?
Great question! How do you know that It's cylinders 1 AND 8 that are misfiring?
Flex fuel ? Yea ! Put that E85 in there ! It's dollar cheaper ! Brush off the 02s , plugs , coils , Injectors dirty ? Evap working ? Stuck valve ? Wiring ? Grounded ?