Question about 1995 Oldsmobile Cutlass Supreme

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Overheating and Heat doesn't work

95 Olds Cutlass Supreme. The heat has stopped working which would tell me the thermostat needs replaced, but also the Temp gauge shoots up to max temp and gives me a "HOT" dummy light within about a minute of running the engine, but feeling around, just a spot towards the bottom of the engine feels warm, cold everywhere else.

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  • john-001 Jan 14, 2009

    I couldn't have described the problem better I'm having exactly the same problem with the temp gauge except my heater still works. I also have a low coolant light that comes on periodically and stays on at times but upon checking the radiator & expansion tank I never find the coolant low at all.

  • Anonymous Jan 16, 2009

    I have the same problems and mechanics cannot find. but my heater works when the car does not run hot and the heater stops working when the car runs hot.

    The car also is losing water somewhere, more than evaporation, I believe

    and it is pulling a lot of air into the radiator system



  • rjvantilburg Mar 12, 2009

    i am having the same problem 1995 olds cutlass supreme 3.1 it runs fine for a couple days and then the temp. guage shoots up and the heater blows cold air. no signs of a blown head gasket have changed thermostat and water pump, hoses are all fine. i am not losing any coolant anywhere when it overheated the last time we loosened the radiator cap just a little and everything backflushed into the overflow HELP

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I have the same problem, i replaced the thermostat multiple times and even changed the water pump, using autozone parts. I still kept losing my heat and the thermostat would be junk after only a few days, then i used napa parts and the only problem i have now is the temp gauge shoots up but the car is not hot which leads me to believe i have a slight electricle problem somewhere with the sensor.

Posted on Mar 31, 2009

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Sounds to me like air trapped somewhere in the coolant's path. You said there's a warm spot on top of the engine. This makes me think of possibly a cracked intake manifold or cylinder head. Did it overheat right before this started? I would have the coolant system 'back flushed' and if the problem is still there, I'd next do a compression test (with the radiator cap off).and check to see if there are air bubbles in the radiator while testing. Good luck, please let me know what you find.

Posted on Jan 18, 2009

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