MY CAR TEMPER LITE KEEPS COMING ON THEN GOES OFF
Asked by Guru9Q9V4Z Feb 17, 2022 at 02:23 PM about the 1999 Pontiac Grand Am 4 Dr SE Sedan
Question type: General
TEMPATURE GAUGE KEEPS GOING IN RED THENCOOLS BACK DOWN
4 Answers
Bad engine coolant temperature sensor?
bubbles and migght need a bleed .
Sounds like you have air trapped in the cooling system. It could also be a worn timing chain, or if you have the V6 a blown head gasket. Faulty wiring going to the coolant temperature sensor may cause this as well. Start with the cheap stuff first. Inspect the wires going to the coolant temperature sensor, replace the thermostat, and bleed the air out of the cooling system. A cooling system flush with a chemical cleaner is a good idea too. If none of these things solve your problem you're looking at something more serious that's not worth fixing at this point. Hope that helps! Jim
One other thing, are the electric radiator cooling fans coming on? Check that too. Jim
