1994 Pontiac Grand Prix Logo
Posted on Jul 18, 2009
Answered by a Fixya Expert

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My tachometer, fuel, and temperature gauges go dead while driving with no apparent cause. I had an aftermarket direct input iPod jack installed at Best Buy prior to this problem starting. It doesn't happen with any regularity, so no pattern to speak of. If i shut the car off for a few seconds, then restart it, they work fine for a while.

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  • Master 714 Answers
  • Posted on Jul 18, 2009
Anonymous
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Joined: Apr 13, 2008
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Sounds like you have a loose ground wire possibly in your dash!

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What would cause temperature gauge bouncing ?

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ffixkick.com
see sensor test page.
if the tachometer in dash is dead, then you lost power to the dash.
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if the they failed 1 by one, then maybe they did?
there are 2 easy tests to find the cause.
coolant
http://www.fixkick.com/sensors/tests/Guage-coolant-test.html

fuel gage
http://www.fixkick.com/sensors/fuel-gauge-tests.html

direct links, it be impossible to answer here all steps. for both.
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