Question about 1997 Oldsmobile Cutlass Supreme

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How to change a thermostat in a 97 oldsmobile cutlass supreme

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  • Oldsmobile Master
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3800 engine I suppose?
Pull the plastic cover ,at the engine side of the top radiator hose (you can leave the hose connected) remove the two 10 mm bolts and remove the housing. There is no gasket just an o ring.
Be sure the new o ring is on the stat correctly and sit it in the engine,WITH THE BRASS BUTTON SENSOR SIDE DOWN!!
Tighten the two bolts up a little at a time ,evenly,and not like a lug nut , don't forget it's only aluminum.
10 minute job.Be sure the parts store gives you a 190 or 192 degree stat,(a colder one will not let the computer fine tune for mileage)

Posted on Apr 07, 2011

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Posted on Jan 02, 2017

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