Question about 1996 Cadillac DeVille

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Overheating i have great power as well , i have changed water pump , my motor does blow the warm or hot air, i changed thermostat , my fans don't always come on when the temp is raised or the a/c is turned on , and which fan motor controls what side please .....

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Check for coolant flow at the Purge line,this is a common problem on the Northstar.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.

Posted on Sep 13, 2009

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Please rate and have a great day:)

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