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

tach dances erratically at freeway speeds

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Old Mar 20, 2002 | 02:27 PM
  #1  
Wheelman's Avatar
Wheelman
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From: Less Talk, More WOT | Houston TX
Default tach dances erratically at freeway speeds

my tach dances erratically at freeway speeds..........like the post title says.... it sometimes reads the correct number, and usually at idle its right but when im crusin it jumps around and when i hammer it its saying i shift at about 6500 which i know it isnt really doing. how can i fix this?

thanks
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Old Mar 20, 2002 | 07:11 PM
  #2  
BAdAzZV8's Avatar
BAdAzZV8
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From: Omaha NE
Default Re: tach dances erratically at freeway speeds (C4Fetish)

I don't know about on the L98's, but on the LT-1's if you installed an ignition box you have to bypass the tach filter or it will bounce all over the place.
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Old Mar 20, 2002 | 11:17 PM
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From: I Hate Tourists FL
Default Re: tach dances erratically at freeway speeds (BAdAzZV8)

yep tach filter!! :yesnod:
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