evans280z Posted September 13, 2006 Share Posted September 13, 2006 my tach wasnt working so i replaced it out and now its jumping around to 8 grand back and forth even when i slam the car door what can cause this? Quote Link to comment Share on other sites More sharing options...
Careless Posted September 13, 2006 Share Posted September 13, 2006 my tach wasnt working so i replaced it out and now its jumping around to 8 grand back and forth even when i slam the car door what can cause this? bad ground wire? non shielded cable? place to start, i guess. Quote Link to comment Share on other sites More sharing options...
roger.svoboda Posted September 15, 2006 Share Posted September 15, 2006 might not be the tach might be the sender Quote Link to comment Share on other sites More sharing options...
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