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How do i know if my car uses an ECM?

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Old Jul 12, 2008 | 12:49 PM
  #1  
DirtyCanadian's Avatar
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How do i know if my car uses an ECM?

I have an 83 Trans Am i got new shorty headers on with no 02 sensor there is a coupling to add one but i dont know if my car had or has an ECM, it has a computer hook up under the driver side dash. can someone straighten me out here. i am getting a new carb can an ecm and 02 sensor help me out is there a chip you can get for them
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Old Jul 12, 2008 | 01:08 PM
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89RsPower!'s Avatar
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From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Re: How do i know if my car uses an ECM?

was there an 02 sensor on the manifold you removed? Do you have a CC carb and dist?
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post some pics and we can help you identify what you have..

Last edited by 89RsPower!; Jul 12, 2008 at 01:09 PM. Reason: Automerged Doublepost
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Old Jul 12, 2008 | 01:09 PM
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Re: How do i know if my car uses an ECM?

i believe the car did have an o2 sensor on the original engine hard to remember that was 8 years ago i blew the original.
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Old Jul 12, 2008 | 01:20 PM
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Re: How do i know if my car uses an ECM?

its always had a Qjet on it with elec choke
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Old Jul 12, 2008 | 01:48 PM
  #5  
89RsPower!'s Avatar
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Joined: Apr 2002
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From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Re: How do i know if my car uses an ECM?

is it a CC q-jet or not? CC dist or vac advance?
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Old Jul 12, 2008 | 04:57 PM
  #6  
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Re: How do i know if my car uses an ECM?

whats a cc dist? i dunno what you mean by cc, i believe everything is vaccuum though.
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there was a vac advance between the y-pipe and headers but got rid of that too.

Last edited by DirtyCanadian; Jul 12, 2008 at 04:58 PM. Reason: Automerged Doublepost
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Old Jul 12, 2008 | 06:18 PM
  #7  
89RsPower!'s Avatar
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Joined: Apr 2002
Posts: 3,552
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From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Re: How do i know if my car uses an ECM?

cc= computer controlled.. basically if you have a computer controlled carbed car the computer controls the timing via the distributor and fuel mixture etc. in the carb. I'm really confused what you mean by a vaccum advance between the headers and y-pipe.. a vaccum advance canister is part of a distributor... if you can post a few underhood pics that would make it really easy to tell.. basically all you're looking at is if the carb is computer controlled or not and if the dist is computer controlled or not.
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Old Jul 12, 2008 | 06:35 PM
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Re: How do i know if my car uses an ECM?

if it isnt cc is it better to have cc?
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