Question about 1994 Cadillac DeVille

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Tranny slams from Park on Cold Starts

94 Deville Concours with 4T80E tranny. In the morning when taken out of park it SLAMS into gear. Once it gets warmed up, it will be perfect all day. I'm in Sunny Florida so no extreme cold temps.

Any ideas?

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  • joesrest May 14, 2009

    Thanks for the quick response redbeard!

    Sorry the history is very limited. The car is not here yet and is being delivered to me within a week or so. Owner said transmission was rebuilt about 1500 miles ago. Ever since he got the car back it always did the clunk and he never bothered taking it back and warranty is over. Sorry I don't have more for you to work with, but that's all I got so far.

    BTW: Buying this for my sons 1st car. This was our neighbors car he used to wash and drool over all the time which makes it kinda special.

    Any help is greatly appreciated!
    Joe


  • larry blais
    larry blais May 11, 2010

    I need some more info. How is the level and color of the trani fluid, How long since the last trani service, How many miles on this trani, In the morning when you start it up. Do you let it idle down before you put it into drive and if so, what does it idle at.

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  • Master
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Do you have a check engine light or is the engine idling real fast.

Posted on May 14, 2009

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