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Hello, I have a 2004 BMW 325I and my car does not move when I rev my engine up a hill on drive. I changed my transmission fluid my car has 90k miles on it does anybody know what it could be? After I get my car moving it shifts smoothly. I don't have any check engine lights on.
 

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Discussion Starter #3
yes, its parked on the hill. I will check fluid again should in check when its cold? i still have ATF left.
 

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downhill it seems to work fine. Sometimes when I am parked in a parking lot it does it as well. It was doing this before I changed the fluid and filter, hoping it fixed the problem but did not.
 

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Automatic transmission fluid need to be check around 100F fluid temperature, warm enough you can keep the palm of your hand on the transmission pan WITH the engine running!!!

If this is only happening when the vehicle is cold and sat overnight and the local temps are far more colder than usual, you may have a typical transmission seal issue that a transmission software update ma help once the fluid level has been properly verified. If the transmission software update does not help, there may be some solenoid replacements that could help, otherwise it is time for a transmission overhaul.

http://forum.e46fanatics.com/showthread.php?t=1063940

http://forum.e46fanatics.com/showthread.php?t=889051

http://forum.e46fanatics.com/showthread.php?t=1009634

http://forum.e46fanatics.com/showthread.php?t=1064898

http://forum.e46fanatics.com/showthread.php?t=1095404

http://forum.e46fanatics.com/showthread.php?t=953056
 

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I was having this issue all winter. Did a cooling system overhaul, thought the issue would subside as a by-product of doing the overhaul. It did not, actually seemed to worsen. Took to Indy to have the overhaul confirmed it was done properly. He took for a test drive and noticed the issue you mentioned. He wanted to check trans fluid, the issue was trans was missing 2 and 1/2 quarts of fluid. He topped it up, drove it on completely cold engine and it drives as it should. My car would basically be so hesitant to go uphill on cold start that it would jerk. No longer does this. He said the reason for low fluid is from a very slow leak from a line. I think he said selector line, not sure. Anyways check fluid level, could have slow leak.
 

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Discussion Starter #8
Thank you for your suggestions I will be checking my fluid and changing it through all the gears to make sure it gets filled properly.
 
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