LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Tach and speedo jumping around at WOT!

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Old 05-12-2007, 07:11 PM
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Default Tach and speedo jumping around at WOT!

The tach and speedo started jumping around at the track today. The more i run the worse it gets. IT does not do it on the street. I believe it is a bad ground, but i do not know were the ground strap is of the gauge cluster. Any help would be great.
Old 01-22-2010, 01:56 PM
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Old 01-22-2010, 02:03 PM
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Check your grounds and battery voltage. My car did the same thing with a dirty ground terminal on the battery.

There is a large ground strap on the engine block.



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