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1999 Oldsmobile Silhouette Repair Question


Topics covered: Thermostat, Engine, Heater.
Mileage: No information provided.

Asked on March 2, 2009

1999 Oldsmobile Silhouette Thermostat or water pump

Engine Mechanical problem
1999 Oldsmobile Silhouette 6 cyl Front Wheel Drive Automatic 170,00 miles

The water temp. gauge will suddenly and quickly move to the hot side and then after a few seconds it will quickly move back to the cool side and stay for a while and then repeat. I believe it is the thermostat, it is not loosing coolent or overheating, in fact it takes quite awhile to get heat from the heater
Avatar Asked by camaro6079

Answer

Replied on March 2, 2009

Usually sudden spikes are a sticky thermostat.I would start there.If the level is full then that would be the place to begin, water pumps dont work then stop working

Tiny Answered by 2CarPros Jack (expert)
12,033 answers provided