VAN WAS HEATING UP HAVE CHANGED THERMOSTAT 2XS

1992 GMC Safari

Tiny

Anonymous

January, 11, 2013 AT 2:45 PM

Van was heating up have changed thermostat 2x's. Gauge fluctuations into hot zone and back almost so fast you can't see it. How do I change the control switch?

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1 Answer

Tiny

hmac300

January, 11, 2013 AT 2:50 PM

Check for a shorted wire, if you are talking about the coolant temp sensor it screws in if you do it while engine cold and are fast you won't loose alot of coolant otherwise drain your system then refull with new coolant. It may also be a bad gauge

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