Coolant temperature

Tiny
KELMAR77
  • MEMBER
  • 1972 CHEVROLET 1500
  • V8
  • 2WD
  • AUTOMATIC
  • 30,000 MILES
When I accelerate the temperature goes way up and then as soon as I let off the gas the temperature gauge goes down.
Friday, July 6th, 2018 AT 4:37 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

There is a constant voltage regulator in the dash cluster that most likely is bad. That regulator keeps all the feed voltage at 12 volts. When it fails, the voltage will rise according to charging voltage from the alternator.

It will have to be confirmed but it sounds like that is the issue.

Roy
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Friday, July 6th, 2018 AT 11:31 AM

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