Question about 1997 Cadillac DeVille
Temp. cooling fans cut in at 106* C. and out at 100* C. Will sit and idle for hours without loosing coolant. When driving above 80 km/h,will expell coolant and overheat. Done pressure test on system,16 psi. maintained steady for 90 minutes.. New rad,/water pump and hoses.. Puzzled.. hope you can help.. Thanks Grumpy...
Two things to check .first make sure you have proper air flow through the ac condenser .Second thing I once ran across this problem with a gm product all tests showed no gasses in coolant but i removed the spark plugs saw slight traces of coolant on 2 plugs. the fix was strecthed head bolts when engine got hot they strech just enough too cause this problem.
Posted on Dec 13, 2008
Over heating and loosing coolant
Posted on Dec 01, 2008
Have you checked the thermostat mate? likely cause of all these problems, just boil it at its specified temperature and see if its any good. if you cant be bothered just buy a new thermostat and gasket (not even $5) and its even easier to fit them
Posted on Sep 11, 2008
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Posted on Jan 02, 2017
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