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Old 02-08-2005, 08:18 AM   #6
onewheelriderzx9
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Re: 1998 740i tranny probs???? need help!!!!

Quote:
Originally Posted by NeilH
I don't know what to suggest, then. I'm no mechanical expert but it couldn't hurt to replace the gearbox fluid and filter - that does sometimes cure slipping transmissions, but I can't see why it would only be reverse. I used to have a 2000 740iL, complete with DIY service manual, but unfortunately it's sold, along with the manual otherwise I'd be able to look it up for you.

As it's only one gear, rather than trash the transmission, you could get a specialist to give you a quote for fixing it - it's gotta be cheaper than the $8000 to $9000 it would cost you for someone to supply and fit a new 'box. Not a job for the newbie, that.

Or.... hope that one of the guys who really knows what he's talking about on this board has encountered the problem and gives you a quick fix involving a couple of matchsticks, some glue and a roll of felt

BTW - when you say it 'slips' - does the 'box' actually provide at least some power to the wheels or does nothing happen at all. If the latter, I might have some more ideas.

Good luck....
well it turned out the transmission is going out so i just bought a used one with 80k on it for 1350 with a 1 yr warrenty, i stiil need tranny fluid and ill be set, does any1 no where i can get tranny fliud cheap??

thanks john
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