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I have a 97 cutlass supreme SL I have replaced the thermostat, water pump, upper and lower hose and temp sending unit and flushed everything but it still overheats. Why?

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  • Cars & Trucks Master
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Major engine damage. Blown head gasket, cracked block or cylinder head, or maybe no coolant in system. Try another engine, gm only made 20 million of them. I found one for a grand prix last month for 125 bucks, and got to observe it running in the donor vehicle.

Posted on Apr 18, 2015

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  • Cars & Trucks Master
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I can think of a couple possibilities:
Blown head gasket, leaking into the coolant.
If it's not blowing water out, the temp sensor may be bad.

Posted on Apr 18, 2015

  • Jessque Malcolm
    Jessque Malcolm Apr 18, 2015

    I replaced the temp sensor already, found no leaks, no air obtructions and no coolant leak (oil is clean) so basically its a blown head gasket?

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