92 Computer Problems

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Apr 7, 2008 | 02:03 PM

Cool92

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Joined: Aug 2004

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From: Lakeland Florida

92 Computer Problems

I have had a problem with the service ASR light coming on. Now the SYS is flashing along with the SECURITY light. When i attemp to start the car, it will start and run for app. 5 seconds and cut off. It will not crank after that. If I keep trying it, it will start. I have been told this is all computer related. NAPA has one for $160.94 (rebuilt). Is there any advantage to installing a later model unit or will it work? Thanks for all your input.

Apr 7, 2008 | 05:01 PM

TOO_HOTTVETTE

Burning Brakes

Joined: Sep 2003

Posts: 1,214

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From: Miami FL

You may want to check. But I think that the '92 and '93 may be the same unit as they both used batch fire fuel injection. the '94 and up used sequential port fuel injection.

There have been quite a few failures with similar symptoms as you state.

Mine would start fine. Then after driving ang getting hot, the service asr light would come on along with the SYS and security light flashing every few seconds. The car would run and drive normally in this condition. If I would turm her off she would not start. Only after 10 minutes upto 30 minutes it would start. Then I would start the whole "show" over again.

I had my ECM rebuilt and everything has been great for the last 3 months. No more light show and no more non-start issues

My rebuild was around $300.00 You may want to check the C4 scan and tune section as it seems many have had this problem

May 6, 2008 | 07:50 PM

wb2dyb

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From: Cedar Park TX

Who did your rebuild of the ECM? Mine stopped "seeing" the Right O2 Sensor, and I failed inspection as a result. Shopping for one shows plenty "available" then you find it really isn't in stock. GM Parts Direct is out, NAPA is out, etc. BBB said he really, really has it. We'll see.

May 6, 2008 | 10:49 PM

TOO_HOTTVETTE

Burning Brakes

Joined: Sep 2003

Posts: 1,214

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From: Miami FL

Quote:

Originally Posted by wb2dyb

I was lucky (so far,so good). I was looking all over the internet and found a place that happened to be just north of me. I went in person and had them rebuild mine.

www.autocomputerexchange.com

The place is called Auto Computer Exchange (ACE) It took a couple of weeks. The re-built MY computer. apparently these are getting harder to come by.

A few weeks later a guy that does work on my car gave me another defective ECM for free. I'm considering sending it in to have a spare.

Good luck and post the results.

May 6, 2008 | 11:36 PM

RACER 1993

Racer

Joined: Sep 2007

Posts: 393

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From: Bartonville Illinois

I'm sorry if what I posted was wrong, I was given that info by a Chevy dealer that was trying to help me find and ECM since they couldn't get me one.

Last edited by RACER 1993; May 8, 2008 at 12:01 AM. Reason: Apparently given wrong info and passed it on.

May 6, 2008 | 11:54 PM

Randy93

Melting Slicks

Joined: Feb 2005

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From: Sebastian Florida

St. Jude Donor '06

Quote:

Originally Posted by RACER 1993

I posted this before but I'll say it again. The ECM used in the 92-93 is the same as the one used in many Camaros, Firebirds, Impalas SS and possibly a Cadillac if equipped with LT1 engines. Since all the afore mentioned cars are prone to become rustbuckets and get crushed, you might find one of them in a junkyard. GM dealers and others keep saying they will be getting some more, but when.

The ECM's for f bodies are the same for 93, a 92 f body ECM is NOT the same and the chips are NOT even close. Vette chips are programmed for more horsepower , while f bodies are what is called de-tuned chips.

May 7, 2008 | 12:20 AM

quickcat

Burning Brakes

Joined: Mar 2006

Posts: 891

Likes: 18

From: Dayton Ohio

You very well may be having computer problems. I had to search high and low to find an ECM for my car. Please see the link below for info on that search and where to get one.

http://forums.corvetteforum.com/show....php?t=1922786

http://forums.corvetteforum.com/show....php?t=1884396

You might also want to ask around to see if someone has a spare you could borrow for troubleshooting. I would lend you mine but I know it has a problem that may be similiar to what you are experiencing now.

You can also try ebay (93 and I think 94 Camaro ECM's are the same part number) to get one but beware and don't pay more than $100 for a used unknown condition one unless you absoutely cannot find one anywhere else.

I hope you get her worked out.

Matt