over heating on 2002 Cadillac DeVille DTS

over heats, but it happens qucker when the air conditioner is on.

by in Lebanon, TN on June 09, 2010
2 answers
ANSWER by on June 09, 2010
It could be many things, hard to comment without being able to do some basic diagnostic tests. Check the coolant level is OK, after that the most likely causes are a cooling system thermostat that is not fully opening, a partially restricted radiator,a mildly blown head gasket or cooling fan that is not operating correctly.
ANSWER by on June 26, 2010
over heats, but it happens quicker when the air conditioner is on
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...we also brought this seal that said it would garruntee to seal any cracks or holes it is still over heating but it just takes longer to do it.
...g bad...note the coolant level is good. I changed my thermostat but it still got up there not over heating but almost but it has not done in a few days any suggestions
IS THERE A WAY TO STOP THE LEAK WITHOUT REPLACING THE HEAD GASKET.IT IS A NORTH STAR ENGINE