Question about 2000 Cadillac DeVille

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I have a 200 cadillac deville that is running hot.i have changed the radiator and the water pump is circelating i only runs hot when i put it in drive and ride off.what could it be?

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Unfortunately there is a strong possiblity that there is a Head Gasket leak. this is typical of the Northstar Engine. What tends to happen is that the head bolts start to pull away from the bloc stripping the Aluminum that they are inserted into. There have been a number of remedies done by the dealers. They are fully aware of the problem. A couple of year ago I did some extensive research into this who matter. I found that Cadillac was using a product called "TIME SERT" That works but has low reliability and often fails after the customer spends several thousand dollars. The first link below describes the problem in more detail. The second link is to a company that has a genuinely excellent product that is a permanant fix. Look them both over and let me know what you think.
Other than the problems with your car, which I totally understand. Have a Happy New Year

Here is a link to another FixYa Article

The solution Kit that should be installed by a professional engine tech

Posted on Jan 02, 2011

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Sounds like a leaking head gasket or possibly a cracked head.

Posted on Jan 02, 2011


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