Question about 1996 Cadillac DeVille

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I have changed the thermostat and radiator but the car continues to run hot. 96 cadillac deville

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  • Expert
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The most common overheating problem with the Northstar engine is a blocked purge line. It's job is to purge air out of the cooling system.
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 Oct 11, 2009

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Make sure that the A/C condenser in front of the radiator is unobstructed and that the fans are operating correctly.
I'm assuming that you have had the car tested for hydrocarbons in the radiator and that there is no steam coming from the tailpipe and you have no leaks? (head gaskets)

Posted on Oct 07, 2009

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1 Answer

Half of my radiator is hot and the other half cold, my 2001 cadillac deville running hot


Sounds like you have a clogged radiator, i would recommend trying to flush it out before replacing it.

Sep 08, 2012 | 2001 Cadillac DeVille

1 Answer

I have a 2000 cadillac deville that is running hot.i have changed the thermostat and changed the radiator.my water pump is circelating.what could be the problem?


Make sure that the cooling fan operates properly, and if it does, then your radiator is partially clogged, allowing coolant to only pass through some of its channels and thereby lowering it's cooling efficiency.

Jan 02, 2011 | 2000 Cadillac DeVille

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Where is the hi heat sensing control to turn on the fans to the radiator located on a 2000 cadillac northstar engine , mine is turning on at 222 degrees and i think thats to high , i would like to change...


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Sep 14, 2010 | 1999 Cadillac DeVille

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My 1996 cadillac deville is running hot. I installed a new water pump and the car still run hot...any suggestions?


did you check the thermostat? how about the fan is it working properly? and finally the radiator did you do a flow test on it?

Jul 15, 2010 | 1996 Cadillac DeVille

1 Answer

I have a 96 Cadillac Deville. The car overheats


i would get a radiator tester to make sure there is no air leaking out at a slow rate

May 05, 2010 | 1996 Cadillac DeVille

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My 1999 cadillac deville keep running hot, i have replace raditor, this car still running hot


If you have change the radiator , then check the thermostat for its temperature while running . then try to change the engine oil it could be one of the reasons that your car is having a overheat problem.

Aug 01, 2009 | 1999 Cadillac DeVille

2 Answers

Why does my 2001 cadillac deville keep running hot. ive changed the water pump and the thermistat


Well there could be a couple of problems if you live in a hot place you should change the thermostat to a lower tempatured one so the water will circulate sooner that will help it run cooler if that doesn't do it it might need the radiator flushed.

Jul 29, 2009 | 2001 Cadillac DeVille

2 Answers

How do you change the temperature sensor on a 96 cadillac deville


4.9 engine: remove negative battery cable from battery,follow top radiator hose from radiator to top of engine,look to the left of the hose and you will see the tempature sensor. sensor is left of thermostat housing

May 09, 2009 | 2001 Cadillac DeVille

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