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

Adjust LT1 Idle?????

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Old Aug 16, 2008 | 11:21 PM
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From: Kingston Springs Tn
Default Adjust LT1 Idle?????

The search option does not bring up much.....Does anyone have the correct procedure for raising the rpm's??

Thanks!!
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Old Aug 17, 2008 | 12:31 AM
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From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
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For our 94 it is as follows:

slightly depress the gas pedal and then start the car.

immediately take your foot off the gas, and allow to idle for 10 seconds.

turn off car for 5 seconds.

restart car, ECM will re-set the IAC to the correct idle speed.
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Old Aug 17, 2008 | 10:56 AM
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If you are wanting to raise the idle from its stock setting, you'll need to reprogram the PCM.
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Old Aug 17, 2008 | 05:52 PM
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Originally Posted by STL94LT1
If you are wanting to raise the idle from its stock setting, you'll need to reprogram the PCM.
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