Question about 2002 Cadillac Deville

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My 2002 cadillac deville started trembling when I turned it on,about 2 weeks ago.A few days later the service engine message went off.I had a mechanic check it and he said it needed a tune up.So when he was going to do it he said he needed to replace the valve cover gasket.The part hasn't arrived but now there is some white smoke coming out of the exhaust, not excessively though.The car doesn't overheat.The mechanic doesn't really seem to know what he is doing,and i don't really know much about fixing cars.What does it sound like to you guys?

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  • annajulie13 Feb 28, 2009

    How much do you think it would cost to fix?

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  • 4,669 Answers

Sounds like the start of a head gasket problem. This is common on the 4.6, but expensive to fix.,

Posted on Feb 28, 2009

  • Clint Smock
    Clint Smock Mar 01, 2009

    Alot, 2500-3000. The engine has to be removed, and also all the head bolt holes have to be retapped because they strip out when you remove the bolts. I've done this job 3 times, it is a lot of work.

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SOURCE: My 2002 cadillac deville white smoke from exhaust

Head gasket. There is antifreeze seeping into the cyllinder when it's not running. When you start it, it won't fire properly until that water is blown out the exhaust. Once it's gone, in a few seconds, just like you describe, it'll run fine. The antifreeze is then being blown out the exhaust. Re - white smoke.

Posted on Feb 28, 2009

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Hi! My 1999 Cadillac Deville for about 2 weeks started messaging low refrig-ac-off. Check engine light on!.


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My 2002 cadillac deville white smoke from exhaust


Head gasket. There is antifreeze seeping into the cyllinder when it's not running. When you start it, it won't fire properly until that water is blown out the exhaust. Once it's gone, in a few seconds, just like you describe, it'll run fine. The antifreeze is then being blown out the exhaust. Re - white smoke.

Feb 28, 2009 | 2002 Cadillac Deville

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