93 computer
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
2023 C7 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (appearance mods)
2015 C4 of Year Finalist
You can get yours rebuilt. It would be hard to find another one....I believe that 92-93 are unique. I had a couple of different issues in my 92, including a higher than normal idle. Sometimes when restarting the warm engine, the idle would sit at 1500RPM for 30-60 seconds before dropping. If that is happening to you, try this: While it's at that high idle, tap the top of the ECM with something (eg a screwdriver handle). If the idle drops down right away, it's almost certain that you have an issue in your ECM. I had mine rebuilt, and no issues since.
Drifting
Joined: Aug 2011
Posts: 1,861
Likes: 1
From: panama panama
you can go into a juke yard. a lot of chevy use the same ecm. google your ecm and see how maney chevys use the same ecm. remeber. dont know on a 93 model but in my 86 I have to keep the ecm chip. and re used in the new ecm
Drifting
Joined: May 2013
Posts: 1,736
Likes: 31
From: Reno Nevada
The 9278 was not used by any other application that I'm aware of. The 86thru 91 ecm did share other applications. The advice to have it rebuilt is sound.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 12
Nope.
Only used in 92/93 Vettes and '93 F-Bodies
Of all the C4 ECM's used ,it appears on here as the one most frequently with problems, many of which are intermittent or not able to be clearly identified.
The last NOS ECM from GM was sold years ago and some have had patchy results with the re-builds
Only used in 92/93 Vettes and '93 F-Bodies
Of all the C4 ECM's used ,it appears on here as the one most frequently with problems, many of which are intermittent or not able to be clearly identified.
The last NOS ECM from GM was sold years ago and some have had patchy results with the re-builds
Safety Car
Joined: Jul 2001
Posts: 4,871
Likes: 15
From: Detroit's West Side MI
Be careful here. These computers in general do not fail.
Often the dealer will point to the computer becuase it will show the DTC's, but I have yet to find out in trouble shooting that the computer itself is at fault. Spend some time to really troubleshoot the problem before assuming it's the ECM...
If you are unlucky and it is, they are truly hard to find...I had two of them and sold them last year within seconds of putting them up...
Often the dealer will point to the computer becuase it will show the DTC's, but I have yet to find out in trouble shooting that the computer itself is at fault. Spend some time to really troubleshoot the problem before assuming it's the ECM...
If you are unlucky and it is, they are truly hard to find...I had two of them and sold them last year within seconds of putting them up...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Pro
Joined: Oct 2005
Posts: 548
Likes: 0
From: Pittsburgh PA
Good advice here...Although the computers in the '92 and '93 Vette's do, in fact, fail regularly.
If you need a computer, send yours to be rebuilt. I just did a repair with a rebuilt computer on a '92 Vert and the computer worked flawlessly. Has the dealer (or you) pulled the codes on your unit?
K&B Specialty Products:
http://kandbcorvetteproducts.com/site/
I think the rebuild was $275.00 and a one week turn. They did an awesome job and the car runs perfect.
Good luck,
Rossi
If you need a computer, send yours to be rebuilt. I just did a repair with a rebuilt computer on a '92 Vert and the computer worked flawlessly. Has the dealer (or you) pulled the codes on your unit?
K&B Specialty Products:
http://kandbcorvetteproducts.com/site/
I think the rebuild was $275.00 and a one week turn. They did an awesome job and the car runs perfect.
Good luck,
Rossi
Be careful here. These computers in general do not fail.
Often the dealer will point to the computer becuase it will show the DTC's, but I have yet to find out in trouble shooting that the computer itself is at fault. Spend some time to really troubleshoot the problem before assuming it's the ECM...
If you are unlucky and it is, they are truly hard to find...I had two of them and sold them last year within seconds of putting them up...
Often the dealer will point to the computer becuase it will show the DTC's, but I have yet to find out in trouble shooting that the computer itself is at fault. Spend some time to really troubleshoot the problem before assuming it's the ECM...
If you are unlucky and it is, they are truly hard to find...I had two of them and sold them last year within seconds of putting them up...
Last edited by Rossi396; Oct 14, 2013 at 07:23 PM.