C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fast idle, possible problems?

Old Nov 16, 2003 | 06:58 PM
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Default Fast idle, possible problems?

just hte other day, my car started idling at 2k rpm. It sometimes falls to 1500, but it was idling at 800-900 before that all the time. any possible suggestons to why its ilding so high?

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Old Nov 17, 2003 | 11:20 AM
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Default Re: Fast idle, possible problems? (94 M-6)

Try resetting your idle speed via the Idle Air Control (IAC) servo. See the Tech Tip below:

https://www.corvetteforum.com/techti...D=94&TopicID=2
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Old Nov 17, 2003 | 05:42 PM
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Default Re: Fast idle, possible problems? (94vette)

How accurate is the on board tach down in that range? My 95 LT1 6M idles at 900-1000 as indicated on board.

Thanks
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Old Nov 23, 2003 | 04:36 PM
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Default Re: Fast idle, possible problems? (94vette)

I think the tach is reasonably close down there...

Thanks for the tech article, but where exactly is the IAC valve, as in, do you have a picture with an arrow...

I know nothing about chevy sersors, or where to locate them. This is the 1st chevy that I have ever owned. Im a serious newb. heh Thanks for hte info, it is really appricatged
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