Question about 1996 Cadillac DeVille

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I hav a Cadillac deville running hot what too do

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  • morganlkenne
    morganlkenne Aug 17, 2012

    there are two metal lines at the back of your engine and they do rush remove coil pack get flashlight fill the radiator with water start it check lines

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  • Cadillac Master
  • 4,977 Answers

How long has it been since the thermostat has been changed.is the cooling fans working at the radiator if not you could have a bad fan motor or a cooling fan relay.it could even be a bad sensor that the computer monitors to turn on and off the cooling fan.this is a different sensor than the one that works the coolant gage or light on the dash.

Posted on Feb 09, 2012

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Posted on Jan 02, 2017

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jigsaw_9077
  • 308 Answers

SOURCE: my 1999 cadillac deville keep 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.

Posted on Aug 01, 2009

Kravcar
  • 192 Answers

SOURCE: 1996 Cadillac Deville- running hot

What temperature readings do you get exactly?.

You can check if your fans are working by switching on the Air conditioning,the fans should be running all the time if the air con is on.

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 04, 2009

cadman000
  • 607 Answers

SOURCE: 1997 cadillac deville running hot

check coolant levels ( ck leakage if any ) and radiator fan operation. Fans should go on automatically when appropriate temps are reached. They also should go on IMMEDIATELY when A/C climate is put on AUTO. Hope this helps

Posted on Apr 22, 2009

Kravcar
  • 192 Answers

SOURCE: 1999 cadillac deville runs hot what are my options

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.Or trace the hose back until you find the blockage.The hose goes in to the engine to a crossover and comes out the other side to near the thermostat housing,the blockage may be there.
Also note that the cooling fans don't come on until the temp hits around 225 degrees.
During normal highway driving the fans will very rarely come on(if at all) due to constant air flow through the radiator.They will only usually come on in heavy traffic conditions on a hot day.
But......if you have the Air Con switched on, the fans will run all of the time.

Posted on Apr 12, 2010

toneman2121
  • 775 Answers

SOURCE: My engine is running hot in my 97 cadillac deville

fans not working, radiator clogged, water pump bad, hose collapsed. have the whole system back flushed. make sure the mechanic understands that you want the system back flushed and not just the radiator if you want to do it yourself and make sure it's done right, here's some directio.
http://www.associatedcontent.com/article/683869/how_to_backflush_your_car_cooling_system.html

Posted on Jun 12, 2010

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