ECM service number?
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Joined: May 2008
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From: rockville, md
Car: 1987 Iroc Z
Engine: 383 Mini ram
Transmission: 700r4
Axle/Gears: borg warner 9 bolt
ECM service number?
Hey all,
I have an 87 iroc z 350 tpi.
anyone know which service number my ecm is?
I have an 87 iroc z 350 tpi.
anyone know which service number my ecm is?
Joined: Mar 2006
Posts: 4,367
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: ECM service number?
The best way to know is to actually look at your ECM to know. In some cases there are several service numbers that can be used all for the same application.
Thread Starter
Junior Member
Joined: May 2008
Posts: 99
Likes: 0
From: rockville, md
Car: 1987 Iroc Z
Engine: 383 Mini ram
Transmission: 700r4
Axle/Gears: borg warner 9 bolt
Re: ECM service number?
thanks guys! but unfortunately the ecm that is currently in the car is a cheap reman.
i dont beleive the number is even denoted on the ECM in this case.
Its bad and my car things its running at 240.55 constantly.
its running rich!
i dont beleive the number is even denoted on the ECM in this case.
Its bad and my car things its running at 240.55 constantly.
its running rich!
Joined: Mar 2006
Posts: 4,367
Likes: 15
Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: ECM service number?
What is 240.55?
Post a picture of the ECM, even remans should have a number we can recognize.
Post a picture of the ECM, even remans should have a number we can recognize.
Thread Starter
Junior Member
Joined: May 2008
Posts: 99
Likes: 0
From: rockville, md
Car: 1987 Iroc Z
Engine: 383 Mini ram
Transmission: 700r4
Axle/Gears: borg warner 9 bolt
Re: ECM service number?
sorry, that was kind of a quick un-thought-out reply.
when i hook up WinAldl, it says my coolant temp is 240.55.
ive replaced the CTS already, and traced the wiring back to the plug. Everything has continuity.
Leads me to think its a bad ECM.
anyway, as far as the numbers on the side. I really dont think it had any numbers relating to GM.
It was kind of a part number for the specific knock-off ecm.
i can get that number for you if that helps? but nothing like 1227165 is denoted on it.
when i hook up WinAldl, it says my coolant temp is 240.55.
ive replaced the CTS already, and traced the wiring back to the plug. Everything has continuity.
Leads me to think its a bad ECM.
anyway, as far as the numbers on the side. I really dont think it had any numbers relating to GM.
It was kind of a part number for the specific knock-off ecm.
i can get that number for you if that helps? but nothing like 1227165 is denoted on it.
Joined: Dec 2004
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: ECM service number?
If you read the letters off the computer chip we can identify off of that but I will bet you money its a 1227165.
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Re: ECM service number?
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Re: ECM service number?
This thread is 4 1/2 years old but, yes you have a 1227165 ECM. All MAF cars used the 165 ECM while the SD cars used the 7730. 1990 being the change year so 89 and prior used MAF and the 165 ECM. There are other service numbers for that ECM which were supposed to have some improvements. Those can be found using a search for MAF ECMs. HTH!
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