Question about 1997 Cadillac DeVille

3 Answers

Temp goes up and down

Heating coil went out and steam up the window and water came in the car on the floor now temp goes up from 213 to 245 and it use to be 190 to 212 before this problem. since it's hot we bypass the heating coil and put the little kit in there until the winter when i will replace the heating coil and i change the thermostat and i still hot but not running hot yet what should i do i have a northstar motor in it.... I have a 97 Deville that has bad overheating problems. I had the wire to thw fan relays replaced, fans now work, but I drove it about 10 miles and it severely overheated. added coolant and drove back and overheated again. As I was driving had temp display on and for a while it stayed around 208 but then shot up off the scale.
I was wondering if the radiator could be clogged or if there is a sensor and valve that is in the cooling system like on Olds Intrigues. There seems to be no coolant flow.

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  • Cadillac Master
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Check for leaks in water lines, chack also for bad hose joins that can leak violently when water pressure goes up.

Check the water is not been consumed inside the engine because of a faulty head gasket, you see white smoke from exhaust when this happens.

Ensure radiator and radiator fan are working and water pump and water circulation are fine.

Posted on Sep 01, 2008

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Are you sure that your not having a head gasket issue? It could definitely have something to do with the radiator. How often did you flush the coolant? How long have you had the vehicle and how many miles are on it? I will assist you further as soon as I have more info.
Thanks,
Lee

Posted on Sep 01, 2008

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Get the water pump checked and the radiator.

Posted on Sep 01, 2008

  • Legin Varghese
    Legin Varghese Sep 01, 2008

    Do not over heat the engine as it could lead to burned out gasket. Before all these check for if any water is coming through the silencer.
    get check the water pump / thermostat / radiator and coolant level.



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