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Re: temp gauge affected by headlight switch? Help me on this one... 200 1993

posted by  someone claiming to be Robb on  Tue Oct 31 09:56 CST 2000 [RELATED]

I have been comtemplating a similar problem that only the temperature gauge and fuel gauge seem involved in. The temp gauge goes up, the fuel gauge goes down. It's like a see-saw.

Everyday, on the same road at the same speed, etc., the temp. gauge says different things. After reading the last post mentioning the voltage regulator on the instrument cluster I started to notice the fuel gauge fluctuations. I just replaced the thermostat and cleaned the threads on the temp. sending unit. I can't believe the engine temp. is actually fluctuating. My next plan (this weekend when I install my baby 2 inch tach.) is to:

1. clean contacts on temp. compensating board.

2. check voltage regulator.

3. run a new ground to the instrument cluster.

If all is operating normally, shouldn't the thermostat keep the engine at exactly the same temp. given the same speed, outsite temp, etc? Someone said that the whole range on the temp gauge is only about 15 degress so if you never get in the red to not worry about. But hey a guy's got to have a hobby , you know?

Robb





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