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1995 Plymouth Voyager Temp gauge going crazy

Tiny
QUIZTRUMDAD
  • MEMBER
  • 1995 PLYMOUTH VOYAGER
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 174,000 MILES
The first time I noticed it was the first time I had it highway speeds after having a ton of work done on the car. Timing belt, water pump, fuel pump have all been replaced in the last month. As we're tooling down the road the temp gauge starts going back and forth between cold and normal. It appears to be related somehow to RPM's. At idle it sits at normal. When I accelerate it starts flopping around. The heater works fine. Electrical maybe?
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Friday, March 28th, 2008 AT 7:13 AM

3 Replies

Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Have your engine coolant temperature sensor ohm tested for faultiness. This would explain the fluctuation with the rpms because as rpms go up, the coolant rushes past the sensor back and forth. Let me know your findings
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Friday, March 28th, 2008 AT 7:30 AM
Tiny
QUIZTRUMDAD
  • MEMBER
  • 2 POSTS
Not only was the reply blazing fast. The fix was super easy. My connection was bad the "plug" that went to the top of the sensor was loose. A quick squeeze and good as new. No more crazy gauge. Thanks a ton!
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Friday, March 28th, 2008 AT 12:24 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
Awesome, please leave feedback if at all possible. Thanx
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Friday, April 4th, 2008 AT 3:18 PM

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