Towed in, No Start! Flow Charts Matter! 2006 Silverado 4.3 v6
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- Опубліковано 15 вер 2024
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It’s always nice to see a true mechanic diagnose a problem instead of taking the easy way and being a glorified parts changer. Bravo Sir Bravo
Green mechanics fire parts cannon and take ob2 cides at face value ...and explore no more. Diy folks fire cannon in hopes that part eliminates code. Its a gamble
Well Dr. Frag, as you can see in the end NO Repair was performed. The faulty part was changed due largely in part to an availability to a flow chart download and print out along with wiring diagram. All in all, due to the intricacy of todays vehicles, the mechanics of 1960, who used to make repairs are dead and gone. Today we are glorified parts changers who utilize high tech methods to find the part that needs to be replaced.
No parts cannons and treat all customer vehicles like it's your grandmother.. Do it right the 1st time.
@@JC-dt4jq ...notice allot ...some obscure module fails not related to the engime and the car wont start
@@TrueCanad1an grandma will get heart attack from labor rates...whats dealers up to $150/hr ?
This is the difference between a technician, and a part exchanger!
Never underestimate the power of flowcharts. Especially when dealing with electrical problems.
Not a mechanic, where do you find these flow charts?
@@CJSleme Usually in car repair manuals. I had one for my '92 Saturn SL2. Had flowcharts like that for all sorts of issues. Simple check this kinda stuff.
@@CJSleme I'm not a mechanic, either. ALLDATA is what's listed on Ray's printout. They have a DIY version where you can subscribe for the same diagnostic information for a single vehicle versus the all-vehicles version a shop would use. They have one-month and one-year subscriptions and searching Valpak online will get you a 15% off code. I just bought a subscription for my Buick 🙂
It also helps when you can read English ! LOL
@@rchassel definitely bookmarking that. Thanks for the info!
The frequency of your uploads Ray has to be commended.. keep them coming 👏
Seriously... Ray must be an editing machine to get one out almost every day.
Really I seen better mechanics.
@@av8tore71 bull shtt you have
@@tava780 Yes, I was thinking the same thing. He must never stop working! Working his day job, editing at home, scheduling uploads, doing his projects around the house. He's also got a wife and kids to attend to. The only reason he can pull this off is because his job IS his content. To put it simply... HE IS A BEAST!
@@av8tore71 theres always someone better BUT you aint it!
There's fiinally something I know about in one of these videos. I'm not a car person. I'm a computer geek. You're right. Thermal compound is used to aid in the transfer of heat between two surfaces. It fills in all the microscopic hills and valleys between them. It's crucial when installing a heat sink, or any cooling system like a liquid cooling block, on any part inside a computer. Not cleaning off the old paste is a sure way to kill your processor, or at least have it thermal throttle. This isn't a fragile PC processor, though. It's probably fine to leave the old stuff on there. That's probably what killed that old module. The old compound looked dry and brittle and the module probably overheated and died. The new paste will fill in those cracks though so it's probably fine. This was right up my alley. Electronics are my thing. This was a cool video.
From one computer geek to another, I completely agree with your comment.
I was about to say pretty much the same thing about the thermal compound.
You're correct. Although processors are pretty tough these days and usually have an auto safety feature to shut itself down if it thermal throttles and still is not cool enough. However, it can happen like you said and kill the processor.
I was gonna comment that, but in the engine bay, there is sooo much air flow when that component is working hard (at speed), that is should be fine. And at idle, it should be barely working (not much heat dissipation required).
Also, you can test this yourself on a cpu/gpu, It doesn't matter how Much TIM there is, as long as there is barely Enough. It's a case of the bigger the glob, the better the job.
And again, that component is designed to run ON TOP of an engine block. My guess it's that it doesn't throttle at 72 /85 / 105 dongrees cience. :)) Maybe it got cooked when the engine was hot, shut down HOT, with no idle period before key-off. < You know, like on a gas-station stop, right off the highway :D
Exactly right… fills in the microvoids that aren’t metal-to-metal for best heat transfer. A thin application of thermal compound is preferred over thick, and definitely clean mating surfaces with a solvent (and let dry) prior to application of fresh thermal grease.
performing diagnostics is one thing, understanding them is another , good on you Ray, you're an asset to your employer.
He's an asset to the human race! Competence is rare.
Problem is when companies get good quality people some appreciate them but a lot don't and they just run
This is a prime example of already knowing what the problem is 6:12 but just double checking and not ordering anything you don't need. Good Stuff
Since I been watching his videos , that policy seems to be a driving force which makes him so good at his job and loved by his viewers. The total opposite of what we usually get at a mechanics shop of throwing parts at issues, he goes out of his way to pinpoint the exact cause and not waste money or effort down rabbit holes.
I really think Ray knew pretty much from the get-go what was going on he did all the sequencing for our benefit he's a great guy thank you Ray everybody else and Ray have a good weekend
This was one of the more complicated procedures here, thanks God the engineers have come up with these beautiful step by step instructions.
I'm surprised they didn't say oh well you've got to bring it to an authorized dealer that is select information have
Being an ex mechanic living in the UK it's always nice to see a real professional at work allways look forward to your videos 👍
And the biggest thing is he's willing to share his knowledge I've known so many people in the trades that was so afraid if they made you too smart you might take their job he understands it's about helping more people get ahead in life and figure out problems he inspired me I came out of automotive retirement now I've got a bag of parts in my garage I need to put onto the car but thank you Ray have a good evening have a great weekend
Brilliant! Although I'm not an engine mechanic, I do however deal with radio and robotics electronics on a daily basis. it is essential to follow the chain of command (so to speak), to deduce component errors. You have just demonstrated, what I have been trying to teach a subordinate, how to correctly follow a flow chart to eliminate an error and complete a circuit. He got it! He totally understands now! I can't thank you enough Ray, you helped me teach a child of disrepair how to repair the unknown. "Click!"
I spent the last 13 years of my 43 year career working as an Electrical and Instrument Technician at Elrama and Cheswick power stations. They were run by a DCS, or Distributed Control System. Many was the time that the operators would call because something wouldn't work. I quickly learned that it was important to determine if the problem was with the "something" or with what actually controlled the "something".
For example, they would say that motor X won't run. I would investigate to see if the motor was actually trying to run.
Break out the flow chart!
I wish they had robotics when I was a kid but my thing was electric you might be in the robotics a little deeper than I'm talking about a matter of fact I get a feeling you're pretty bright guy by the language you use hey I wish I would work with somebody like you we would have had a lot of fun I worked in industrial tooling for over 30 years matter of fact I've been in the trades 45 I have a good evening
Nice to watch some electrical troubleshooting. Well done!
Gotta admit, I hate doing it, myself. A little shy on patience.
I had a good friend Roscoe will use one of those inline testers on his spark plug in front of my house on the yard all sudden I looked at the window and Roscoe was dancing around to my front yard he held on to the other end of the tester God bless him and rest his soul he was a great friend have a good weekend everybody
It's a good idea to clean off the thermal transferring compound since some of it dries out and clumps up and can cause a gap which decreases the thermal transferring compound efficiency( read in rays voice)
Luke I am your father
That was pretty impressive the way you followed that flow chart..difference between a backyard hack like me and a true pro
You do not need to remove any wires to check for spark. Just take a DC inductive timing light
and clip onto any wire, you will see the flashing light or not. See a timing light can be used for more than just timing. Also if the light does not flash consistently that is another problem. Like wires.
yep, we called it a poor man's scope
Every time you read the mileage, I think back to the 50's thru 70 or 80's about high milage vehicles that were, for the most part, unheard of. They were in the junk yard with under 90k miles.
You can thank the Japanese auto companies for that...it forced the American companies to match their quality or go bankrupt.
I purchased used a 53 Mercury Monterey HT in 1960 in prime condition with 31k on the clock for $125 . The engine was completely worn out, rings main bearings and rod bearings and valves. The main cause was the person who owned it did not change oil at all, never. When I open the engine up it was a solid ball of sludge. Pulled engine and tanked and bored and reground the crank and had a nice daily driver until 1967 when some idiot reared me at 50 mph. Sold engine and overdrive trans for $350 and never looked back. The engine had 77 k on rebuild and I did indeed change oil every 3000 miles after my rebuild. Service is important!!!
Never underestimate the value of the diagnostic flow chart. Most excellent video.
It's the process of elimination to make it easier for people that aren't as skilled is right but I always got my meters out and never paid attention to stuff like that I every so often a blind hog finds an acorn in other words I got lucky quite a few times I shouldn't say anything because the next project will work on or probably back fire have a good evening
Even though I knew that a 4.3 was basically a 5.7 with 2 cylinders missing, I had never heard it called a three forths three fifty. And that’s with my 30yrs in the aftermarket parts store selling parts to MANY pro customers. But, I like it 👍
I was wondering what the heck saw marks on the back of the block from what did they do with the other two cylinders put on a motorcycle hey have a good weekend I'm just kidding
Depending on the labor rate just replacing the coil and module might have been cheaper. Whenever I tried to follow one of those flowcharts I usually got to a step where it says "connect the Belchfire 386 diagnostic tool and run test 32z" and the manufacturer sells the Belchfire 386 for $8,600.
I can tell I wish I could work on some of the vehicles you do to have a piece of equipment like that you work on the nice stuff man I'm glad I don't get in one of them cars I would get in so much trouble so quick but it'd be a heck of a lot of fun till the lights came on have a good evening
My son did parts and service for motorcars they had the best of the best in that place unfortunately they relocated and he went elsewhere I never rode one of them cards cuz when I got out of my machine shop I was so dirty and you don't get it in a half a million dollar car with oil and grease on your pants that's a no no the customers would die have a good weekend
Especially on the older gm's in Florida due to the heat, the modules are notorious for going out, I would have went straight to the ignition module. They're not that expensive and I always kept a few different ones for testing instead of using a flow chart. 9 times out of ten it's always that module.
In business 40years, cant afford to waste time, keep a known good module, unplug one go or no go , done.
Back in the early 80's the Chevy trucks were notorious for the ICM failure and they were in the distributor then. When a Chevy didn't start just replace the ICM, no diagnose needed. LOL.
He not only replaced the module, but tested each link of the system to verify its proper function. I’d say that’s well worth the twenty minutes.
Same here. I'm a old School mechanic n it's always the module.
You went through that flowchart like a boss. Good work !!
Anyone can do that, how hard is it, LMAO! Can ya fucking read? YES? Then you can fix a car.
@@ILOVEBACONBOY2018 A lot of people can read, the trick is understanding what you are reading.
My own opinion, but agreeing with many other diagnosticians, most flow charts SUCK! Generally w/I the 1st couple steps, they have you digging out, or worse yet replacing the computer. They have you unplugging stuff to ohm check wiring, where IF you know what your doing, you can short-cut A LOT of that, never touch the computer and so on. I personally use flow charts as little as possible and I fix cars that the rest of shops give up on.
Excellent diagnosis and repair. Straight out of the South Main teachings by Eric O... great mentor and you always mention this man from upstate NY. You are great at your work, continue the videos just keep it up my man!
Eric O is doing great on diagnostics. As well as all the other jobs. Alon with Ivan and Scanner Danner . Greetz John.
Eric O doesn't normally use a flow chart to test electrical components. Either does Ivan at Pine Hollow Diagnostics or Scanner Danner.
Dem wires, dem wires, dem module wires 🎶 ... the black one connected to the relay, 🎵 the pink one connected ...
I remember replacing the same thing on my son's 01 Blazer long ago after I replaced the coil. Didn't need to replace coil. Live and learn . I'm not a mechanic,but I do what I have to do .
This is something I am still learning. I'm an old school equipment mechanic (hit with a hammer until it works, or replace it) and now work for the local Cat dealer. We are technicians now. I am still learning to use their troubleshooting flow charts before I just fix the problem. 99% of the time, I end up being right and feel like I just wasted a bunch of time going through the chart. But that 1%, at the cost of Cat parts, can get really expensive really fast.
My son's friend no my friend's son works on heavy agricultural equipment he used to go out in the field and fix it in the field and visit with the farmers the guys talented and brilliant and we were with him a couple of weekends ago and the one heck of a good time he's made a smoked pork roast to die for hey have a good weekend
It's good to see you taking the steps necessary to instill confidence in the fact that mechanics "diagnostics" charges is a real and valid charge for the customer. Great job!
but then again, all are not the RayMan!
I e been an automotive mechanic for 49 years. Love watching your stuff
Great vid Ray. Impressive diagnostics. You don't waste time, you get the schematics and have the knowledge and skills to follow them through to the desired outcome. Not to mention all the proper tools to get the job done. Thanks, Ray.
Even well engineered OEM electrical components don't last forever. Luv Flowcharts; they make life much simpler. Good job, Ray !
This was a good one! I like the "you guys watch while I crank" format. Great way to make your viewers feel involved...
Way better than "here, hold this wire while I crank it!"
You correctly followed a potentially 40 step diagnostic, which while not difficult, is still a pain. You had success, proving that you are not just another "pretty wrench". Good job.
I truly appreciate how detailed you are. I also love the Flow Chart you created...helps out tremendously and keeps everything in order. Keep up the great work and thank you for the uploads.
I would need a chart like that for the simple reason that I have tention span of a knat on crack and I would forget where I was at and then I'd be back at square one going what was I doing next
Love the fact that you got there in the end. A breakdown engineer should have been able to solve this on the roadside by following a very similar flow chart.
Checking for fuel and spark rules out the crankshaft sensor or points to it.
No spark at the plug, following the system to where the spark comes from, coil. If that's being powered but isn't producing a spark, what tells it to do so, the next step is to see if check battery voltage across the connector. Most modules have 3 pins, the centre on is the coil trigger. If you have battery voltage at the module but no spark at the coil, diagnosis usually over.
As the module replaced the points and capacitor, which used to be a service item every 5-6k miles, there lies the service item that usually fails around 40-50k miles.
Common roadside repair on this system. Vauxhall's used a similar system built into the distributor. Even easier to diagnose.
No the ECM determines which cylinder to fire and when because the module is inside it.
You did follow the flowchart very though.
Love from the UK.
I had to laugh the first time Ray said, “You guys watch for a spark I’ll go turn it over”. 20 k voices yelled there’s no Spark! Loved the TS flowchart - wow was that remarkably detailed. Great vid Ray
After reading a number of comments I think they missed the point that this was a training session for viewers. Thank you for taking the extra time, Ray.
He screwed up on the flow chart. i dont even think he caught it. Do not use this as a training session
'
@@billthrasher3587 do tell. What did he screw up?
@@ggariepy
He was checking for power on the ICM connector from the coil with the coil unplugged
And he wondered why they wanted him to check for spark at the coil after he checked resistance on the coil wire when he shouldve checked for spark at the distributor per flow chart.
He got to the problem but generally the cap/rotor and or coil cause module failure
Greetings Ray from the UK. I have been watching your channel for some months now and I am full of admiration for your skills in diagnosis, execution (amazingly often one handed!), editing and your even temperament. I know it's been suggested before, but you should really be working for yourself, you would clean up! Hope you can sort that one day, meanwhile I hope your employers know what a good bloke they have! Keep up the good work, sir!!
I'm thinking he's probably thought it out. Here, he has less liability ,---probably the most he can suffer from an accident or mistake is to be fired vs if you own things you constantly live with the sue-happy jerks out today. Plus, he has no over head other than his tools and equipment and there's a handy extra person he doesn't have to pay for that can help start a car when he needs help. I kinda don't blame him for being just the mechanic and not the owner.
Im not a mechanic, but I watch your videos often, I watch most of my UA-cam content in bed, weird I know, thanks keep up the good work. Ray.
always, i mean always replace the thermal paste on the heatsinks. Wipe down the old paste with a rug soaked in isopropyl alcohol from every surface till they are metallic clean, and apply the new paste accordingly. The old paste is no longer conducting heat well, that's why that module failed.
Good morning Raymond from Chicago😁 let this day be the best day you've ever had for you and your family👨👩👧👦! I've got my ☕cup of Joe and I'm ready to go😉, what's the plan BROTHER !🧰🤷👍
another great video... printing the flowchart- then methodically going through the steps instead of just ordering parts and crossing your fingers. Well done sir.
Hi,
I am from Germany and love your videos. There are some interesting difference between your art of work and the way they do the things here. One is that you record the video by yourself. Wow not easy to film and work at the same time. So thank you and go on with your videos.
In an undisclosed garage location somewhere in New York...... Mr O is watching proudly
I haven't seen one of those modules in years ! Back in the day used to keep known good ones for Ford, GM, VW Audi group and others in the tool box for quick check. Lost count of how many I swapped out. On some Ford GM VW cars the heat sink was a hot distributor body which in turn was mounted in the cylinder head onto the cam. A trick we used was to mount it on a square of aluminium and make a bracket which suspended them with a nice air gap from the heat of the engine. Never had one fail after that even in the hottest of summers.
I have done several parking lot repairs including a timming belt.
As an 18 year old fixing to graduate highschool, im planning to become a diesel/automotive tech. And i aspire to do as good a job and be as comical and paitiente as you are! Love the content btw
OMG, such a sweet, honest pickup. Hard to find lately.
You're right. What the paste does is it fills all the minor imperfections on the two surfaces removing air pockets between the two. Since air is a terrible heat conductor, it does allow the heat sink to sink more heat out of the hot thing.
Love your diagnosis! As for me, i will honestly say i would have shot the parts cannon, and then follow a diagnosis after spending 8 hours of replacing parts and spending a few hundred dollars, due to my impatience, lol!! I just started to watch your videos, so i guess i have learned a few lessons from watching your patience, humor, etc at repairing cars! Thanks again for having ignition,lol!
Been watching for the last week/ten days. You've got me saying "click" while working on my old Chevy.
I really like watching you it brings back things when I was in the field.i used to love doing that kinda work
Any time I watch these in the morning I'm always hoping some vehicle with the same issue comes into my shop lol
Ray, paste is called TIM (Thermal Interface Material). Good idea to clean all surfaces before applying new thin layer of TIM. It helps the transistors in the module stay cool and reliable. Thanks for the video. I am having a great day. Joe
Better put it somewhere else instead of being on the ign. coil. Coil gets hot.
Just a tip. I have used the original thermal paste in these applications and while it does work it’s not as effective as it could be. I ended up using arctic silver 5 thermal paste for a computer on several vehicles that I’ve helped friends out with and even on the cheap icm that could fail easily those are still going strong over 5 years now. I do a little extra and use isopropyl alcohol 91% to clean all surfaces before applying new thermal paste and I have added enough to properly recover the surfaces. Typically the package included doesn’t contain enough for a full reapplication and old or brittle thermal paste doesn’t allow for good heat transfer. I would think that after so many years the icm has failed due to thermal paste breakdown. It’s well known to those of us who work on computers to keep them going always check and reapply thermal paste at any necessary time to keep temperatures under control.
I was wondering if Artic Silver would hold up to an outdoor environment and below freezing temperatures for any length of time.
Thank you for mentioning that it works for 5 years and counting..
Ray, I will still watch all your old videos until you get a new job🎉
Hey Ray.. Just wanted to tell you i absolutely love your videos man.. Your skill level is really impressive as well as your camera and editing skills. Hats off to you man. Keep doing what you do. Sending love all the way from Egypt :)
Can't stop watching these. Keep it up man 👌
Have a great Day Ray :) (when the diagnostic sequence is 10 times longer than the repair)
I think he was going through the flowchart for readers benefit, showing folks how to read the flowchart and follow it through the sequence of steps.
I thought it was very nice of him, using his time up on this repair for informative and educational purposes that way. Then again, I'd say that is what his You Tube channel about, intentionally or not.
A very professional and thorough diagnostic!!!
I'm not a mechanic, but from the initial description, I thought wrong fuel in tank. And...... that's why I'm not a mechanic. Love the diagnostics.
I've had several pickups with the 4.3 and the engine itself is reliable as a rock. Probably if you drove a vehicle with one to destruction, the engine would be the last thing to die.
Dude I agree, they are great engines. We have a couple 2002 plain Jane, 5 speed, 4.3 work trucks that both have 330k+ miles on them. The seats are shot, everything rattles, and we’ve patched holes under the clutch pedals; but they still drive and pull 16’ enclosed trailers day after day after day.
I've worked at gm dealership for 25 years and have seen many with over 300k.
I'd rather the extra labor cost in diagnostics than pay for unnecessary parts and labor. Had I done this myself, I would have replaced coils, ecm, and plugs (while at it). I had a similar circumstance with my old Saturn. Thankfully, the parts cannon total was only around $270 and it fixed the problem.
I don't have the patience to test and backtrack and be thorough. That's why I would take my current vrhicle to you and only tackle the simple stuff myself. Thank you for yet another awesome video.
Great video! Very detailed and meticulous diagnosis. Nice work! Really appreciate your knowledge. So many home mechanics throw parts at the problem and end up getting frustrated when it isn't fixed.
These videos are therapeutic. Keep them coming.
Also I would suggest against probing connectors where they connect and instead back probe them to prevent damage to the terminals
Everyday I watch you fix everything... And everyday I think .. man I wish you were closer to me because I never go to another mechanic if you were.
Love seeing you diagnose to the fullest extend instead of firing the parts cannon.
Nice fix Rainman, once again. You could have shot the proverbial parts cannon at this vehicle. But instead you took the time to diagnose the problem and made the repair.
You set a good example for other mechanics by doing what you do.
Thanks Ray.
I'm glad you showed this to people! So now they know!!!
@RainmanRay you should do a video on how to properly use your FLUKE (Multimeter) I've been doing this for years and I use mine for 1 thing and I simply don't understand the settings and how to PROPERLY use it.
You give AWESOME and in-depth answers to questions so what do you think? Probably won't be your best viewed video but us gearheads would like it
There are literally thousands of tutorials on UA-cam on how to use a DMM.
Before being able to use a MM, you should begin with some basic understand of electronics in stead of the device itself... once you know the basics, different functions of the MM will be clear to you instantly ;) It's not even hard work, with attention you should be able to understand the basics within a day. Somebody just telling what button does what doesn't make you much wiser... ;)
Understood but the basics is what I know hence the question
And I I wanted to support someone else's channel id go watch those but idk what they're about and I know what rays about and what he stands for so I'd rather him get my viewer dollars then someone else who may not align with my vies on a moral level
@@Diesel_Dude
I wasn't a party of this conversation before now, but I get what you're saying. And you have valid reasons for wanting it to be Rainman Ray to teach you more about all of the functions of your multimeter tool. He reads these, so he might just do that some day.
Also, I do agree with the reply about understanding electricity first though, if you don't already.
I was for sure thinking..bad fuel pump when ran on empty. Good job with diagnosis.
Good call. Appreciate the effort you put into diagnostic tests before you start.
I recently had to replace the ICM on my ‘93 Chevy Silverado 5.7L, with 257k miles, it was the original one from the factory
Picking up the toys is a crucial step! Stay safe.
Those downloaded diagnostic charts for vehicles is a must have . . . . Nice job, Ray
Where can one find those downloadable flowcharts?
Thank you for this video this helped me after my truck up and died in the middle of the interstate. I was stumped and couldnt find much info so thank you!
Also the icm was the factory part with 325k miles on it
Common sense would have led me down the fuel problem path.......I have resisted flow charts, but this proves they do work.....
Good job done! I had a 4.3 V6 in my old Astro Van, what a great engine, smooth & powerful never had an issue with it, put on more than 200K before I replaced it, great engine.
Before you even started with this whole paper trace you said it would be that mo-dual. You sir are good.!!!!
When you squeeze out ANYTHING...say..."GOOOOOO". Great video!
Pro electronics tech here. About that thermal paste: It's best to clean the old paste off the heat sink before applying the new paste. Alcohol and a paper towel works very well. Then you want a thin, even layer of new paste. It's there to fill in gaps and dimples in the heatsink and ICM heat spreader to make for a good thermal connection. Too much can be worse than none. Love your videos, watch them every day.
So, where is your shop located? You are truly, a mechanic! I was fortunate to get 'guidance' from a true mechanic 58 years ago. I have an appreciation for your skills and integrity.
It’s always cool to see what you mechanics do to our vehicles. I’m no nerd when it comes to vehicle repairs (the most I’ve repaired were the bulbs and the control buttons in a 2007 Chevy Cobalt), but I find it neat to see how it’s done. I was very happy to see when you repaired that Kia Soul recently. I own one of those now and it’s nice to see that working on it wouldn’t be an absolute pain in my side.
4.3 is a extremely tough and reliable.
Except for the intake manifold gasket problems. Mine was seeping but Barr's copper sealer fixed it.
Did that on the same motor without the flow chart. When it crapped out a few months later changed the coil. 50-50 shot the first time no brainer the second. Cheers
Great work. Flow charts really work. You just proved that.
They have their pros and cons.
A trick I've learned through the years is to learn and understand the systems and flow charts, then jump forward to the test for the most likely suspect. As often as not that's where you'll find the problem if you've done your homework of understanding things. Also parts like this one are often common across several years/models, so if they're known to be weak having a known good used one on hand can confirm the diagnosis quickly, then all you need to do is check it's input for proper specs in case something else is causing it to fail. Now your 1-hour diagnosis has become a 10 minute one proven by a running engine and you can either pocket the profit or discount the bill accordingly.
Ya, that flow chart was kinda BS in the number of steps before testing the most likely cause(s).
Do you have spark? No
Do you have output from the coil(s)? No
Do you have output from ICM? No
Do you have voltage/ground/signal to ICM? Yes
Replace ICM.. Done.
That's not a 'trick' you learned...you're talking about taking shortcuts (albeit based on your experience). At about the 6 minute mark, Ray correctly named the 2 most likely culprits (the coil and/or the Ignition Control Module), but he still went through the repair manual's recommended troubleshooting flowchart.
@@kenc2257 Call it what you will- I call it a 'trick'. If you know anything about computer "diagnosis by halves" you'd see the relationship and understand how it can save you a lot of effort to 'section' diagnostics into system or component groups, then check till you find the faulty section or group instead of testing every individual thing. Doesn't really need any experience with the particular thing you're working on; only a decent understanding of what each section or part does so you know where to divide each from the other. Applies to about everything, not just cars and computers. Knowing where the usual failure(s) will be found does help but isn't necessary- the 'trick' will still speed up diagnosis.
@@kenc2257 A flow chart usually takes you the long way around finding out what the problem is. P RO is right and is the same way that Scanner danner teaches electrical and drivability diagnosing.
love the way you went through a trouble shooting procedure and explained each step to resolve the problem
The ignition module is still on the engine for a location.
If the fan blows at it, that helps, but other makes have found putting it in the fresh airstream keeps it away from heat and vibration.
That white paste is very expensive. Dow Corning 340, or Wells.
You can find small quantities online for cheaper, but you need it now.. check your part box before purchase for the goop they provide.
They give you silicone dielectric when you buy a replacement to act as a heat conductive material.
It helps to use A/C Delco on GM products usually.
Some aftermarket modules don't have redundant circuitry and live a shorter life.
A flow chart with over 47 steps - Wow
Back in the day it was check for spark at plug, points, HT & LT. Job done
Thank god for computers (Sarky)
I owned a 04 chev with the 4.3. I replaced 4 of the ignition control modules, it was crazy.
I like that you thoroughly check before diagnosis
Really glad to see your not just a parts replacer. Good job!
I knew it was that after you found no spark. Changed more than a few of those in mine and my brothers vehicles.
nicely done, great to watch a master at work. People should appreciate good work done well.
That was very educational Mr. Ray! I work at Autozone, and I have helped plenty of customers with information I’ve learned from watching you.
That truck was in very nice shape for its age and mileage, the owner obviously takes care of it. This was one problem that I didn't have with my 06 Astro. Mine had a distributor rotor go bad while going down the freeway, no signs of trouble at all before it happened.
Great job just loved the step-by-step approach.
Thanks Man! Awesome to watch you work, great mechanical mind with doses of gravity.
I built one of these blindfolded back in high-school. Love these little engines
Nice job of diagnosing the problem with a flow chart, But you kinda knew what the problem was all along yes, Have a Great day
This video made me realize why diagnosis charges are high. Great job! Thanks for the enlightenment.