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

New problem ?

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Old May 3, 2017 | 09:33 PM
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Default New problem ?

Hello,
92 lt1. Was messing around under hood tonight. Nothing major. I noticed that when car was in park, automatic. three well spaced times I reved the engine to say 2500 rpms , and when it dropped down the 650 rpm. The dash and door lights blinked on and off ? What's going on ?
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Old May 3, 2017 | 09:39 PM
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check your voltage regulator on your alternator
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Old May 4, 2017 | 05:21 PM
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Originally Posted by skidball
Hello,
92 lt1. Was messing around under hood tonight. Nothing major. I noticed that when car was in park, automatic. three well spaced times I reved the engine to say 2500 rpms , and when it dropped down the 650 rpm. The dash and door lights blinked on and off ? What's going on ?
Was any door open at that time?

Were the door lights on or off before you reved the engine?

What position was the headlight switch?

I don't know enough to make a valid suggestion of a direction yet. But if you want a off the cuff guess at this time, check to door switches for proper adjustment. Is the idle speed motor working properly, 650 might be a bit low.
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