Question about 1994 Cadillac DeVille

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99 seville is overheating. temp gauge gets to 3/4 and back to 1/2 mark. when overheating heat doesnt work but blows hot at normal temp. had headgasket checked and was ok. changed the thermostat and about 6 months ago the radiator was replaced. mechanic said it sounds like theres air in the sysytaem but not sure what to do

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  • Blacprinz Aug 09, 2008

    i have the same problem,got some relief for a month or two after adding steel seal.(a liquid head gasket fixer) but now the overheating is begining again. The temp gauge is all over the place,and the time before overheating varies.Every thing has been replaced,except a head gasket.any solutions?

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My retired uncle has a 97 cadillac deville sts that runs well but after a short distance or time idling begins to overheat. He has replaced the water pump, thermostat and had the radiator and head gasket checked. Unfortunately he lives in a rural area and there is no local cadillac dealership for diagnostic repairs.

Posted on Oct 21, 2008

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Sometimes air can get trapped in there, it happened to me onetime with my bmw. If that is what the problem is you can bleed the air out.

Posted on Jul 22, 2008

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http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
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