What causes the temp gauge on my chevy venture to respond I Radically?

Asked by Nov 22, 2014 at 09:18 PM about the 2004 Chevrolet Venture LS

Question type: Maintenance & Repair

My temp gauge registers normal when the car is first driven. Once the engine is turned
off and restarted, the gauge reads very high. To lower the gauge reading, the starter has
to be tapped without starting the engine.  This sometimes does the trick but not always.  
The indicator at times passes the red zone of the gauge yet the engine is not overheated.  
What causes this?

1 Answer

62,325

Bad tempreture sending unit.

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