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Well this what I know, all auto tranies work with oil pressur and computers. it sound to me that the computer is sending wrong signals to your trany, I wouldn't be surprised. The smallest cut in a wire would cause this that to happen. Have the wires and connections check first because the comp at the dealer will not tell you about this problem Thats why I hate going over speed bumps and any thing that hits the bottom. most bmw dealers would hook it up to the comp for free for a diagnosis thats the first step. If this comes out clean and it's not computer. related then prepare to wip out the binjamins for the internal repair
which cost between $1000 to $3000 or more for a bemmer!
Good luck, hope I was some help.
Lenny from Texas (Ye Ha)
"cow-boy who drives a bemmer"
Don't forget the computer dose the shifting and "Do not ever go thro a auto car wash this will f-up your computer and maybe you trany too you don't want your computer f-up because for you car it's very, very, very exspensive about 4 g's plus hours and programing. This will happen, so save your self the maddness and wash by hand.
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