Question about 1989 Chevrolet Corvette

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89 corvette quit running found bad ecm and replaced then the comp was bad replaced so now car idles great but will not take gas runs rough and misses real bad

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Check the fuel injectors - seems the new fuel is messing these up...

Posted on Aug 17, 2010

  • dalef760 Nov 08, 2010

    last resort check pins on plug to ecm



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89 corvette idles rough when warmed up

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1990 corvette idles rough sometimes. Sometimes it runs great when I start it up. then other times it wants to stall and I have to give it gas for a while but it still idles rough. It's either one way or...

Sounds like a clogged fuel injector.
Or worse one starting to go bad.
The problem with your car is the computer system readout is analog.
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You could try a after market fuel additive called "sea-foam"
Most Wall-marts carry this product.
Give it a shot,I've done so myself on a VW VR-6 and talk about finicky fuel injectors!.
Worked really well for me,hope it does the same for you.
If I helped any please give me a vote.

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