1989 Plymouth Voyager Temerature sensor

1989 PLYMOUTH VOYAGER
13,000 MILES • 6 CYL • FWD • AUTOMATIC
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MASOHAL
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  • 1 POST
I replaced my radiator, coolant, and hoses. Since then my temperature sensor needle fluctuates violently. I do get heat. Whenever the needle becomes steady for a few (10-15) seconds, it appeaqrs to indicate correct engine temperature. But the needle never becomes steady for a longer duration, like a few minutes.

What did I mess up while changing the coolant system? Do I need to change the thermostat or the temperature sensor or anything else? Could it be a loose wiring? I want to resolve this problem before it becomes a major headache. Right now my my 6
mile commute in town, it poses no problem

Thank you. I appreciate your help.

Manny
Jan 25, 2009 at 1:14 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi:
If you replaced the temp sensor, either you got a bad sensor or the wiring was damaged when you replaced it. Check for connection faults and broken wireing to the sensor. Also, if thre is a bleeder in the t-stat housing, make sure there is no air in the system.

Let me know what you find.

Joe
Jan 30, 2009 at 6:31 PM