1992 fast idle
Race Director
Joined: Feb 2002
Posts: 11,607
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From: Compound in the Grove, Ga.
2026 Corvette of the Year Finalist - Unmodified
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2019 C4 of Year Finalist (performance mods)
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St. Jude Donor '16
Sounds like a vacuum leak or maybe bad IAC. Your picture looks odd I see the LT1 is not in a Corvette?
Last edited by FASTAZU; Sep 2, 2018 at 06:09 AM.
Melting Slicks
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
Do you have the 92 ECM and the ALDL connector? If so an adapter and a laptop with TunerPro RT will tell you what you need to know.
The most likely causes are, as already mentioned, a vacuum leak, a bad IACV, air bypassing the throttle plates fro someone cleaning the DAG off them. Other possibilities are MAP sensor or O2 sensor.
You need to read the ECM to find the problem.
Is this installed in a 32 Ford?
The most likely causes are, as already mentioned, a vacuum leak, a bad IACV, air bypassing the throttle plates fro someone cleaning the DAG off them. Other possibilities are MAP sensor or O2 sensor.
You need to read the ECM to find the problem.
Is this installed in a 32 Ford?
