Much Worse than Having Bad Fuel Injectors
In this video I'll show you how I went about diagnosing an engine that would take a few tries to stay running and idle, it would do this right after a cold start and struggle and choke up and die for the first few tries. Also a service engine soon (check engine light) that would stay on was another problem that ended sending the diagnosis down a path that was worse than having simply bad fuel injectors.
Here are links to products which were used in this video:
Test Light: amzn.to/3ZuvLnX
Facebook: / ratchets2015
Twitter: / ratchets15
Instagram: / ratchetsandwrenches
Disclaimer:
Due to factors beyond the control of Ratchets and Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchets and Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchets and Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchets and Wrenches.
Please show the ECM swap, and whether the car runs better post computer change.
seconded
ECM swap is easy. The problem is that most of the refurbished units go out very fast. I replaced two under the warranty within a year
GM OBD1 wow what a blast from the past. I still remember code "22" being 'diagnostics ready' or something to that effect when you short the diag pins. Don't ask me how I remembered that after 30 years. I recall that the ECMs themselves are pretty goddamn simple, not very difficult to rig up a "replacement" from a whole different model altogether so long as you've got the original ROM code from the specific model you're working on. God it's been forever since I've done that
I'd like to see the finished product, what it sells for, and profit margin. I'm enjoying this series! Thanks 👍
Love seeing a person who knows what they are doing. Thanks for the lesson.
One of my car things I've collected in my 42 years of life car wise is a tpi setup. ( intake, runners, injectors rails , harness, pcm) Man times were so different back then. Awesome video
This is what sets u apart as a great mechanic. Love these kind of in depth diagnosis 💕👏👍
I appreciate your teaching and sharing good information. I was always a good wrench man, but tend to dread diagnostics. Regarding the original symptoms I was reminded of a similar aged GM car that turned out to be a leaky intake manifold gasket, but I have no doubt that you're a guy who is experienced enough to know the full range of possibilities.
Wow, impressive diag. You really know your stuff!
Vacation time! Cheap and pleasant poor country. Breakfast is being prepared, and smells great!!!
Great video. That Vette is well used. This is going to be a good series. Thanks for sharing the adventures of the C4.
Excellent demonstration.
OBD II was such an upgrade (especially for the DIY'er) in the repair field. That being said, even it isn't infallible. But a definite help. I remember having to do this trick to an old 90 Horizon I had when I was younger to diagnose and fix a problem; I do miss the days when you could actually see the road from the top of the engine bay.
This is a good demonstration of the troubleshooting process. Very educational. Diagnosis is something I'm trying to get better at. Videos like this help a lot. Thanks!
Check out pine hollow auto diagnostics here on KZhead
Very instructive to me today on diagnosis and procedure, thank you!
Great channel. Thanks for all the info
that dash is so cool
These guy is smart asf. !! Good job man
cant wait for next video to see what the problem could be
We want to see you fix it....👍
My 84 Firebird had ECM problems. Sometimes it run fine but other days it had missfires. One chip on the board was soldered only from the bottom but not on the top. Soldering it fixed the problem.
Nice very informative vud. Sharing is caring. Thanks
Greetings friends. Thank you for the very useful video tutorial.
Hey you're a great guy
You remind me of my boy Pedro, makes me feel like i know you lol Keep up the content ✅
You are awesome!
you have a sweet ride.
Is it possible the ECU has a bad capacitor? My 88 Foxbody Mustang GT was having idle and drivability problems. Turned out to be two bad electrolytic capacitors on the ECU board. One was bulged and the other was just starting to leak. I caught it just in time. Replaced the two caps and all was as good as new. Bulging and leaking electrolytic caps are very common with any computer or electronics of this age.
Thats a great point, especially as its a $1-2 fix that is easy with through hole components by anyone handy.
Check that the ECU gets 12 volt on all the Vcc pins (and grounds too for good measure). If not it will not be able to blink the fault codes.
Will you do a follow up video of this car?
thanks, I sent to my mechanic!
From Johannesburg South Africa
thanks
From El Salvador
I've been learning from you for years. I removed & rebuilt 3 Subaru engines. You're like a couple of great professors I had in college back in the last century that made me learn. On my 88 corvette,the left front rotor gets a little hotter than the other side. All new pads & clean fluid. What do you think?
Sticky caliper, needs an overhaul.
From Toronto Canada
love u bubba
Every try to fix the unit? Open it up and find out what is wrong?
Hi Ratchets I have an Audi a4 1.4 tfsi 2016 model. And the car is shaking between 1000-2000 rpm only in 1st gear if I accelerate gently. If I step on the gas more than half it won't happen. Can you please help me with this. I couldn't find it on any website I don't want to waste tons of money by going to a Audi garage with a problem like this.
Tune it with tuner pro rt and pcm hammer
That thing is a nightmare, gm quality was not good even back then.
Every manufacturer was new with computers/electronic. Try bmw’s and all these cars of the early 90’s.
I believe you jumped the wrong pins. Should be the two on the end.
Jump a and m...
👍
Thanks for explaining very good job another video not you I need something out
No bueno
you are a wizard... but wouldnt an ecm be easier than tearing the engine apart? $250 isnt bad lol
From El Swansear.
What u don't have the massive case of pre 96 obd diag. Kit. With about 300 different connectors. What a joke that kit is. Takes up more room than 10 impact cases. And all it does is exactly what u said a series of flashes.
1st view
This is an unfinished repair video.
Dreadful ‘80’s styling. The whole dash is just right angles. I’m surprised the steering wheel isn’t square.
I'm more than sure that some c4 owners are thanking you right now for this video ,,,you are a real car God,all the blessings for you and family
No it's the. Motor HA HA
What would FIXD say??!!?? 😅