Question about 1993 Buick LeSabre

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1995 buick lesaber trany only works when car warms up

First thing in the morning is the only time it happens the car has to warm up about ten minutes then I put it in gear and it works great

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  • crazy_tyme Dec 23, 2008

    Thanks Ill do that this weekend


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I had the same problem. i replaced the modulator valve no further problems

Posted on Feb 21, 2009

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Etal for instance expands and contracts due to temperature differences, granted the changes are very minimal but in a machine that has no room for tolerances, these changes can be enormous. Oil is another one, your engine is actually filled with oil on the inside and when that oil is cold the viscosity of it changes dramatically, its like comparing tree sap and maple syrup. And all of these little things play a crucial role for your car.

You must let your car warm up properly before you use it. My recommendation is that you leave it in park for about 5-10min in the morning, just enough to get your transmission warmed up enough for it to work properly, after that you want to make sure that as you're driving for the first 10-15min you want to keep the RPM's as low as you can. If your engine and transmission are not warmed up enough they will not perform well at high RPM's and may even be damaged as a result of being pushed too far if they are not warm enough.

Posted on Dec 22, 2008

  • machadojr_fe Dec 22, 2008

    you may also want to check the transmission fluid and filter to see if they need to be changed.


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