Question about 2001 Cadillac DeVille

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Will a crack radiator make your 2000 deville not start up.

I was wondering does the computer shut down, to protect the engine

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  • 254 Answers

I have never heard of something such as a vehicle computer shutting down due to an overheating condition. If the engine is simply shutting down, you may be seeing a different problem. Most vehicle computers, even despite a fault somewhere, will try their best to "limp" the vehicle home.

I hope this helps to answer your question! :)

Posted on Oct 05, 2009

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I have a 1999 cadillac. deville i have problems with overheating i see no leaks so i bought new themat and radiater a week or two later it start overheating again what's wrong?


Water pump vanes wear down with age. May need a new pump. Other things to look at are a cracked head. The engine will burn the coolant if there is a crack. With the engine cold. remove the radiator cap. Start the engine and let it run long enough for the thermostat to open. Now look at the coolant flow. Is there any bubbles in the coolant as it passes by ? If so then you have a crack in the head.

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There is a temperature shutoff function in the computer. When the engine gets too hot, the computer will shut off the engine to protect it. Many components in the hummer engines are temp sensitive - meaning if they get too hot, they will be ruined. If your H runs fine when cold but shuts down once hot, then it is possible the sensor went bad - but I would first have the codes scanned to see what the computer says about the problem!!
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It may have overheated before it blew the hose.
If the engine temp sensor is reading that the engine is hot, the computer will disable the ac since it produces even more heat for the engine.
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It could be a sticking thermostat, or the water pump, or the radiator cooling fans or other causes.

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282420f.jpeg Does your engine look similar to this. IF you're referring to the wording on the cover, this is the valve cover. This is the only piece i'm thinking that has this. But this should not leak radiator fluid to leak. With the car overheating and something cracking, it could be the radiator busted or the head/block could be cracked. Try to fill the radiator up and see if it starts leaking. I'm just wondering if your water pump locked down or any of the other pulley's causing the belt to snap. If you would like send a picture to me at chris-n-misty@charter.net of the part and I can better help you.

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It could just be condensation - you hope..
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My wife has cracked 2 heads this way..

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Sounds like an overheating problem, best to get it checked, maybe thermostat stuck closed, pluged radiator, head gasget, cracked head.

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