Extensive Misfire Troubleshooting with a Chevy Express Van. Big headaches and hidden issues!
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- Опубліковано 6 вер 2024
- If you haven't noticed yet, it's not all classic cars and racecars around here at Lucore Automotive the vast majority of our business is fixing cars trucks and vans for the normal person. Daily drivers and road trip vehicles. Well this 1996 Chevy Express 1500 came to us for some drivability concerns and an obvious misfire, little did we know just what was in store for us!
Often times the vehicles that come to us have been in and out of other shops before and often times had repairs done... or at least parts replaced. That was the case with this van as you'll quickly see it's been somewhere before us a variety of "repairs" performed. That's where we step in to hunt down the cause, or causes, and get our new customer taken care of. Fortunately as you'll see by the end of the video the issues are resolved and we can add this one to our Win column.
Repairs and troubleshooting like this are exhausting, not necessarily physically exhausting as we certainly do more intensive work, but more mentally taxing. Trying to determine what the actual issue is, back track through what could be causing said issue, while also trying to keep in mind what repairs have or may have been done that could ALSO cause issues. Sometimes a big portion of what we do, is fixing a repair (or repairs) other people have done in the past, in order to get something working properly.
This one isn't a flashy fun one but it's a good one, showing just some of the experiences we have behind the garage doors. Hopefully you all enjoy it and maybe even learn a thing or two!
Lucore Automotive is a small independent American small business located just outside Columbus Ohio. While we are a full service shop that maintains and repairs countless daily drivers we are also well known for our work on classics, race cars, and collector cars.
We would like to thank all of our friends, fans, follower, supporters, subscribers, and most importantly customers for being here with us! Without the wonderful people who let us work on their toys, and help their dreams come true we wouldn't be in business.
![2015 Chevy Express Intermittent Misfire - Injector Circuit Codes [Part 1]](http://i.ytimg.com/vi/wcifwQKDUrE/mqdefault.jpg)
![2015 Chevy Express Intermittent Misfire - Injector Circuit Codes [Part 1]](/img/tr.png)
This one... it's all work no play!
Looks like it got to you that Van , .....Hope you unchilled after chilling XD
CARQUEST AUTOZONE PEP BOYS ALL WILL SELL YOU THE WRONG SPARK PLUGS MOST OF THE TIME..AS LONG AS YOU SAY YOU HAVE BEEN IN THE BUSINESS YOU SHOULD KNOW THIS OUT OF HAND BY NOW..
@@Oh-Jay52 lol yes the chilling didn't last very long, it was about 20 that day 😄
Not sure who to point the fingers at with the spark plugs thing.. could be.. who knows. Especially with the smattering
Great to see someone who is not a part swapper and actually takes the time to diagnose the problem
We definitely try to do it the right way, sometimes it really kicks you in the pants. This one really REALLY didn't want to be cooperate
THIS is the difference in taking your vehicle to an EXPERT TECH, vs. taking it to someone who merely, "works on cars." Anyone can have a tool box filled with expensive tools. Those tools are useless in the hands of a sub-par technician.
I've subscribed to your channel! I ACTUALLY learned things from this video, and I expect I will learn MUCH more watching your other vids.
Great diagnostic. Great video. Great technician!!!!
Being an Instrument/Electrical Journeyman. I could write a book on situations you would not believe. Folks have no understanding of what you automotive tech's go through troubleshooting. I do. Great job using the process of elimination to make needed repaires. Experience is essential as sometimes intermittent problems can lead to loss of sanity. In my case a loose connection can cause process shutdowns & hundreds of connections to go through even skinned wires in conduit. Great job! Thanks for
sharing. Be safe.
What a great job. Never give up. I loved the “ I WIN “. It is a battle at times.
Oh absolutely it is and you have to be willing to fight until it just gives up, surrendering the win 😀
Is a shame you located in Ohio I'm in Florida
Wow I’m impressed I have almost the same van and no shop around me is willing to 100% diagnose it. It doesn’t start in the rain, shops will tell me what too check however they refuse to work on it. Now I just drive it in the summer for fishing trips/kayaking. Thanks for all the tip!
Is yours miss firing ? As well
At 11:50…I hope the folks at AC/Delco are listening and have sent you a nice advertisement check. I’m gonna put AC/Delco’s on my 97’ Chevy Express. Having a random misfire but only above 55 mph when I notice it. Thanks for the video.
No sponsorship or advertisements here! :) Just honest work and honest opinions. Hopefully the video helps a few people along their repair journey.
@@LucoreAutogreat video man your patience & attention to detail is remarkable!👍🏾
I'm bringing my Express to you😮
Awesome job with the diagnosis and process of elimination to find the problem. You got very good mechanical skills and the business I'm sure benefits from it greatly. A shop is only profitable if has good technicians and good shop tools and equipment. Really like the new blast cabinet. Electrical gremlins can be time consuming and challenging but rewarding when you find them and properly correct them. I was a technician for many years. We have the same work ethics and skills. I also ran a couple shops at the end of my career that were very profitable. I retired early due to health reason. I miss it. Still work on my own cars at home. Keep up the videos.
I had many of them back in the day how frustrating it was then people and parts canons or even other shops always made it frustrating but ar the end the day its like you said you have closure I know I did awesome content keep up the awesome job. God bless you and as always be safe 👍
Thanks Ray, fortunately this one ended with a win but it certainly could have gone the other way. Especially with all the issues created by "fixes" previously, many shops would have given up. This is 3 days of diag and fixing that not many mechanics would be willing to sign up for.
The challenges though are really what we're known for around here. Which... is both a good and bad thing 😀
Those Chevy Express vans are solid. Easy to diagnose. Crazy that someone went that far without figuring it out
If they just would have brought it to you in the first place it would have been so much easier😂
Great work from awesome people.
For SURE it would have been, and a lot less stressful! But sometimes even we need a challenge to keep us on our toes! 😀
Very reliable mechanic ! I’m going thru a misfire now 2000 gmc safari
one of the most helpfull of all vidios
Impressed with the thoroughness and accuracy. If i thought mine would make the 3.5 hr trip, i would be sending it straight to you.
Need a mechanic like you in the PGH area lol
Matt Foley will be glad his van is back in tip top condition!
Great stuff. Good to watch a real professional, cheers from Wales U.K.
Great and honest work. Dealing with the electrical problems of my van 😢
I have a 2011 2500 work van going into the shop this weekend with a P0302 code. This video makes me a little nervous lol. 😅 hopefully mine isn’t this hard to diagnose. Great video..I wish you were my mechanic.
Best video brother , dang it was great following you through it all that's a first for me after all these years and big heck ya on finding that injector wire man awesome.
And yes on hating to work on vans even after all this time lol.
Anyways I really enjoyed it thanks for all the work that goes into these videos 👍
Thanks for sticking through it all, we know it's not flashy and fun but it's real honest mechanic stuff. Little hidden challenges like these are what derail many repairs and projects, it's tough to see something through like this.
Not saying anyone needs to know this stuff now but, ya never know maybe we learned someone something! 😀
@@LucoreAuto Thank you a tech watching another tech but that's our life.
Everything is much appreciated I really enjoyed it . 👍
@@rodneyf.9595 we try not to share tooooo much of this kind of stuff, it's not very flashy or attention getting just honest greasy hands kind of work. But glad at least a few people seem to have liked it and watched!
cool. i need to bring my car to you. I drive a 2004 Buick Lasabre. Non pressure power steering line was leaking bad when i bought it. Had some one to fix it. they said buy the line he will install it. That was a year ago. i haven't found any one in the area who wants to work on it. im being told its to old. I invested a lot of money in this car and its all i can afford. now the power steering pump quit and steering it is like driving a cement truck with no front tires.Cool video love the content
Super Cool. Great video. I have this same truck.
use a good copper plug folks , i profess i only use AC delco on the GM products .. oh yeah a gm van of this age are so much fun to work on ..nice roller cam. great job lucore ! great vid !
We almost exclusively stick to AC Delco stuff on these things, being able to trust your parts on a difficult or frustrating job is HUGE. Do it right, do it once.
Thanks for watching and supporting!
Not bosche double iridium?
$$$ Cha Ching on diagnose time. Great hunt and find hell I was just watching loosing my patience lol. Thanks
Lol MOST things don't fight us quite this hard but sometimes you just have to strap in for a battle. This one.. it almost became a mission. Sometimes when the shop says "We're still working on the diagnosis" ... they actually mean it 😉
First time I put one of those spiders in a S10 back in the day I bent one of those pins. Tripped me up bad.
O the dreaded parts changers in for the mechanic to diagnose and fix 👍👍💯
Making complicated problems more complicated for the next guy!
YOU ARE AMAZING DUDE.!
Excellent t/s!! Ya I'm sure the customer should be thankful the PCM didn't get fried.
This one certainly took us for a ride mentally but in the end, we still win! Not sure if the PCM had been replaced in the not too distant past or not... it very well may have been hit by the parts cannon too!
excellent video! Im curious also if a faulty TPS or connector could create P0174, P0300 issues. My OBD2 scanner is showing weird TPS voltages.... Im going to replace and find out. Perhaps you'd had experience w this. Thanks!
Where I live it's very hard to find a great mechanic that is very thorough while doing his work... Most of the time I have to bring my cars to the dealers to get work done. There are NOT that many shops that have good mechanics in the area which is too bad..
An excellent, very interesting video!
Good work, thanks a lot!
I think a relative compression test with a cylinder sync and a Injector drop test would have saved you a little bit of time. However the end result was the same.. fixed is fixed.
You are correct.....
-An Injector drop would have shown both injectors not contributing.
-relative compression would have given a ballpark for engine integrity..... but I have had relative comp be misleading so I prefer to do an actual comp test. And with mismatched plugs they all needed to come out anyway.
It has been a minute or two since I have had to "undo what someone else put into" on one of these old Iron blocks.
@@richardlucore6813 undoing what others have done is always the fun part. 😂
A lot of times that's the most challenging part, or "unrednecking" as we sometimes refer to it 😀
I've never had an issue with an NGK plug, but I run V-Power because that's the closest to a normal plug. I never run Champion because I and my Grandfather both have had issues with those from his days with his own service station to my career wrenching on everything with a spark plug.
We run NGK in a lot of things and really have no problem with their products. Typically speaking we prefer to stick to AC Delco on these, partially a good luck thing, partially just a bias on domestic vehicles.
The bigger issue is when you have different plugs, with different ratings, from different manufacturers... things can get a bit wonky
My techs hated it when I would take a G-Van in for repairs😂
They are pretty universally hated 😀
Yep, that ignition system has to have all AC Delco parts to operate properly.
Current project has faulty signal to IAC. I'll be checking continuity to VCM next. Why GM placed that under the hood seam I don't know.
I've liked the 5.7 ...properly maintained it'll run 300 easy.
Most of your job on this van was cleaning up others ...mistakes. 👍
We need more mechanics like you..
Great work 👏 ! Sir I'm about to buy 2024 chevrolet express passager, which engine size do you recommend me thanks!
You can only put it in the wrong hole on your birthday 😂😂😂😂😂
Have a 3500 6.0 that I had to replace water pump. Scanner tool at AutoZone kept saying Mass Air. Bought a new sensor, plugs wires were shot so installed new AC Delco, but same…. 🙄
Someone has definitely been launching the
"Parts Cannon" at it...
This guy is thorough..he found multiple errors from idiotic mechanics that like to "Half ass Henry" jobs.
Well done bud!
i have a 95 yukon doing the same exact thing.new cap and still does it.
once the truck warms up the miss is intermittent like something is loose.
Thank you so much for your video
This was so informative.
Now I know what more to look for with my "misfire" that coded as o2 sensor then anti lock break system,to ignition to now misfire and no cylinder code.?!@😩
nice, very helpful
Gotta love it when someone else gets their grubby fingers into something they have NO clue about!! Costs them more in the long run then want to bitch and complain when you change so much for diagnostic work and to re-fix what someone else messed with and hacked up
Unfixing the fixes is a HUGE portion of what we do around here, especially vehicles that have been through a few sets of hands. Never assume things were done right before you get there!
Sometimes when the shop says we are still trying to diagnose the issue after a few days.... they actually are 😉 This was 3 days of hunting/fixing/researching
Great work!
Good job 👍
Thank you! This one fought and fought but in the end we win!
5:20 in. You said 1 and 3 misfire. Both on the same module. I’m going to lean that way now. Stay tuned. Lol
I have the same Van with the same problem
Came across your video, thanks for the info. I have a ‘01 chevy express G1500 that I travel in. The only thing I can feel off w/it while driving is it sounds like its trying to get air in. Hooked up a computer to it and am getting lean bank 1 &2 & fuel level sensor 👎🏻👎🏻👎🏻
Fuel level senor code often is the level sensor is worn out and needs replaced.
Lean code on both banks often means the fuel pump is wek or fuel filter is clogged. Replace them both (pump and sender) along with a filter as tank removal is necessary for both repairs. Use a quality AC Delco pump unit. We have seem high failure rates with aftermarket fuel pump assemblies.
@@richardlucore6813 wow, thank you!!! Need to get this done before my next trip.
@@Bekz00 there are other items that can cause the lean code for both banks. the intake manifold gasket could be leaking. Air leak behind the Mass airflow sensor. throttle body gasket leaking. bolt that holds the throttle body hat not tightened down. etc.
Ya know who doesn’t have a UA-cam channel showing his work ? The Who put that distributor in.
Lol! As far as we know, yes you are correct. Part of why we film this stuff honestly is just transparency, showing what really goes on and what needs done. Not saying we don't make mistakes too, we certainly do.
Not sure who or where had a hand in all these things but hopefully they see the video and learn a lesson for next time!
@1:25
How did you get the engine cover off?
I had to remove the passenger seat to make room for removing the cover on my 1997 Express van.
Many many hours spent playing Tetris ;) Hopefully yours was resolved!
@@LucoreAuto
Seat was not heavy. Four nuts. Seller removed the rearward seats. Therefore, a de facto cargo van to throw the seat to.
Great video. Just curious if you charged all the hours of diagnostic time.
Great question and no we don't. Typically speaking yes we do like to be paid for our labor and time spent but when you get into something like this it's just not feasible. It also becomes something of a personal challenge to figure out. You really can't hand a customer a bill for 3 days of diag/research/etc, or at least WE wouldn't.
Most of the time we don't go anything more than 4 hours of billable diag time, anything beyond that we usually eat.
@@LucoreAuto new follower because of that statement. Well done.
I just bought a ac Delco cap that didn't have brass nodes .
I like how you said it's usually someone put something on it wrong yeah usually majorly wrong or in backwards or on the wrong side or how the hell did they get that even in there that always makes me laugh when that happens 2me💯👍👌🤣
SO much of the work we do is "unrednecking" vehicles, AKA Fixing the Fixes. Especially when you get into older vehicles that have been through multiple shops/mechanics/owners you really never can assume what IS supposed to be there IS there.
Takes a different kind of mindset when you are troubleshooting for sure. Hopefully this one was at least a little entertaining as well as educational!
@@LucoreAuto ❤
Awesome
I know a guy who spent hundreds of dollars on parts for his truck...the so-called mechanic was a joke..so i went over to give a look at the engine..the plug wires were high dollar wires...the mechanic said he found the wires in a dumpster, behind a parts store..i told the owner to put his old wires back on..he said wires arent the problem...well two weeks later he finally changed the wires..the truck ran great..the high dollar wires were bad from the manufacturer..some people are stupid😂😂
What the compression is 120 good
What brands of distributor do you recommend. Shop recommend “Tech Smart” and I looked for ACDelco and found it to be a much high price of course and not available in store so looked at Duralast gold and wondering your thoughts. Pulled code P0300 on my girlfriends 02 Chevy express van with the 5.7 Vortec with only 17,000 original miles. I replaced all spark plugs and wires as well as distributor cap with an ACDelco but didn’t replace the rotor due to limited parts availability. The shop that wanted to replace the whole distributor said that the cap is charred and there is some play/wiggle room up and down in the distributor. Would really appreciate your insight on this matter. Wanting to do the repair myself and save her close to 1,000 bucks if possible.
Also the crankshaft position sensor was replaced recently and thinking it might just need a relearn.
No check engine light on but vehicle is supper sluggish, poor fuel economy and just doesn’t seem to be running nearly as good as a few other 5.7L’s I’ve been around. Do you think it’s possibly injectors, hoping not
Cheap compression gauges usually have the wrong valve core. Color has nothing to do with it, the spring is very light in the correct core.
Chevy van song:
ua-cam.com/video/RiEIToOWr64/v-deo.html
Lol thanks for the link, haven't heard THAT one in quite a while! So what do the stripes have to do with on the cores?
@@LucoreAuto The outer gasket stripe color varies, there's no standard I've found in Schrader's literature. The materials do vary as per their spec, one must confirm the material is compatible with the application. For instance, neoprene is the inner seal elastomer in the case of gasoline and the outer is usually nylon in most applications. Spring opening pressures and suggested application are listed in their specification chart. Nickel plating, etc.
I'm considering selling my Silverado to buy an Express van. It looks much more difficult to work on, but is it really THAT bad from a mechanic's perspective? Is it a nightmare or just a PITA? Thanks!
Note: I don't own a lift and would be working in my driveway
I'm working on a 1961 vw type3 squareback that was my great uncle's. I want to make it 4wd but don't know where to start since it's in such bad condition. Any pointers?
Your awesome !!!!
Just curious if you use a labscope in your shop ??
At 14:37….you said a 305…did u mean a 350?
One more comment, why I hate flying. If 99.9% of stuff works what is the 0.1% thats not.😂
Water in the gas !!!! Duh.that will cause the p0300 code. P0300 code only means the engine is misfiring.
Try putting 2 bottles of HEET and a bottle of Seafoam into a fresh tank of good gas.. Run through that tank and do it again.
Water in a bad tank of gas caused me grief making the engine misfire. "P0300"
Which set of my Stabilitrac /Traction control to go into shutdown and throw an error code. Worse was the code caused my transmission shift points to go haywire.
Everyone had crazy fixes suggested. Chasing the rabbit down the hole.
It all boiled down to IDIOTIC chevy ECM programming.
I Cleared the contaminated fuel. AND MAGIC...ALL CODES CLEARED.
No parts needed , just feul dryer and Seafoam.
so just throw more parts at it
P