my temperature gauge was moving up and down today but car wasn't overheating, and the key was really hot when I took it out of the ignition. The ignition was hot too. Where to start to diagnose this?

Asked by Aug 17, 2015 at 10:55 PM

Question type: Maintenance & Repair

It's an 89 Honda Civic, replaced the radiator and thermostat last September.

1 Answer

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If it was hot outside your temp. gage will fluctuate as the thermostat opens and closes to allow the cooler coolant into the engine. Long as it is not overheating, I would check your coolant level to see if any needs to be added, when the motor has cooled down for a more accurate fluid level.

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