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
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
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.
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!
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.
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.
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.
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.
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?
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.
![ค้าง (STILL) - GEMINI [ OFFICIAL MV ]](http://i.ytimg.com/vi/Ftxx3hk5vkU/mqdefault.jpg)
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
Love seeing a person who knows what they are doing. Thanks for the lesson.
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
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
Wow, impressive diag. You really know your stuff!
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.
I'd like to see the finished product, what it sells for, and profit margin. I'm enjoying this series! Thanks 👍
This is what sets u apart as a great mechanic. Love these kind of in depth diagnosis 💕👏👍
Great video. That Vette is well used. This is going to be a good series. Thanks for sharing the adventures of the C4.
Vacation time! Cheap and pleasant poor country. Breakfast is being prepared, and smells great!!!
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 TH-cam
Excellent demonstration.
Great channel. Thanks for all the info
Very instructive to me today on diagnosis and procedure, thank you!
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.
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.
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.
These guy is smart asf. !! Good job man
cant wait for next video to see what the problem could be
Will you do a follow up video of this car?
We want to see you fix it....👍
Hey you're a great guy
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.
You are awesome!
You remind me of my boy Pedro, makes me feel like i know you lol
Keep up the content ✅
that dash is so cool
Nice very informative vud. Sharing is caring. Thanks
From El Salvador
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.
From Johannesburg South Africa
Greetings friends. Thank you for the very useful video tutorial.
you have a sweet ride.
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.
thanks
From Toronto Canada
thanks, I sent to my mechanic!
love u bubba
Every try to fix the unit? Open it up and find out what is wrong?
Tune it with tuner pro rt and pcm hammer
I believe you jumped the wrong pins. Should be the two on the end.
Jump a and m...
👍
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.
Thanks for explaining very good job another video not you I need something out
What would FIXD say??!!?? 😅
No bueno
you are a wizard... but wouldnt an ecm be easier than tearing the engine apart? $250 isnt bad lol
1st view
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.
Dreadful ‘80’s styling. The whole dash is just right angles. I’m surprised the steering wheel isn’t square.
This is an unfinished repair video.
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