How do you test the ECM
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Joined: Nov 2002
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From: Castaic, CA
Car: 1988 Camaro RS
Engine: 2.8L of Raw POWER!!!
Transmission: Stick Shift
Axle/Gears: 3.42's
What problem are you having, there is no way to directly test the ECM, you have to check sensors and outputs first, then if everything else checks out OK, then you have to replace the ECM with a known good unit. If the problem is solved, it's the ECM...it's aminly trial and error.
What issues are you having? ECMs don't go bad as often as people like to think they do. Most problems lie in sensors and outputs of the ECM.
What issues are you having? ECMs don't go bad as often as people like to think they do. Most problems lie in sensors and outputs of the ECM.
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Joined: Jul 2003
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From: The Nest
Car: 1985 GMC Jimmy/1998 Chevy Malibu
Engine: 3.2L turbo Hybrid/bone stock 3100
Transmission: T-5 soon to be 700R4/4T40E
Originally posted by 2_point8_boy
What problem are you having, there is no way to directly test the ECM, you have to check sensors and outputs first, then if everything else checks out OK, then you have to replace the ECM with a known good unit. If the problem is solved, it's the ECM...it's aminly trial and error.
What issues are you having? ECMs don't go bad as often as people like to think they do. Most problems lie in sensors and outputs of the ECM.
What problem are you having, there is no way to directly test the ECM, you have to check sensors and outputs first, then if everything else checks out OK, then you have to replace the ECM with a known good unit. If the problem is solved, it's the ECM...it's aminly trial and error.
What issues are you having? ECMs don't go bad as often as people like to think they do. Most problems lie in sensors and outputs of the ECM.
There is a way to test the ECM, but a simulator has to be built and you have to know EXACTLY what you are looking for/at, to determine if it's fuctioning properly, or not.
Supreme Member
Joined: Nov 2002
Posts: 1,832
Likes: 1
From: Castaic, CA
Car: 1988 Camaro RS
Engine: 2.8L of Raw POWER!!!
Transmission: Stick Shift
Axle/Gears: 3.42's
OK, I stand corrected, but for a normal person, there is no way to test the ECM itself.
And what the hell is "QFT"?
And what the hell is "QFT"?
Senior Member
Joined: Jul 2003
Posts: 506
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From: The Nest
Car: 1985 GMC Jimmy/1998 Chevy Malibu
Engine: 3.2L turbo Hybrid/bone stock 3100
Transmission: T-5 soon to be 700R4/4T40E
QFT! = Quoted For Truth
Yeah, I only mentioned it because it's possible, but not nessisarily feasible.
Yeah, I only mentioned it because it's possible, but not nessisarily feasible.
Last edited by The_Raven; Dec 3, 2005 at 11:59 AM.
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