>The auto tran on my '91 735il will not engage in reverse but it will engage
>and shift in all other gears. It has 143k miles. Any ideas? Also, I have
>heard different opinions on going w/ a rebuilt tranny or a used one if I
>need to replace it. Used ones w/ low mileage are extremely hard to find
>plus I don't know the history so I'm leary. Any opinions would be
>appreciated. Thanks.
Sounds like a dead rear brake band - shouldn't be too expensive to REPAIR but a
rebuilt will be dearer
Sir Hugh of Bognor
The difference between men and boys is the price of their toys.
Intelligence is not knowing the answer but knowing where and how to find it!
Hugh Gundersen
hsg@h-gee.co.uk
Bognor Regis, W.Sussex, England, UK
Dave Plowman (News) - 18 Jan 2007 13:59 GMT
> Sounds like a dead rear brake band - shouldn't be too expensive to
> REPAIR but a rebuilt will be dearer
Depends what you mean by not too expensive. The parts might be cheap but
the labour more or less the same as a complete overhaul - which is why you
don't usually just repair a box.

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Dave Plowman dave@davenoise.co.uk London SW
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hsg@h-gee.co.uk - 19 Jan 2007 12:26 GMT
>> Sounds like a dead rear brake band - shouldn't be too expensive to
>> REPAIR but a rebuilt will be dearer
>
>Depends what you mean by not too expensive. The parts might be cheap but
>the labour more or less the same as a complete overhaul - which is why you
>don't usually just repair a box.
Depends whether you feel confident enough to strip an auto box. I have done
many Borg-Warner 35 & DG, Ford (C4 & C6) and one or two GM boxes (400) Oh yes
and the Chrysler Torqueflight but never a ZF
Find a wrecking yard!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Sir Hugh of Bognor
The difference between men and boys is the price of their toys.
Intelligence is not knowing the answer but knowing where and how to find it!
Hugh Gundersen
hsg@h-gee.co.uk
Bognor Regis, W.Sussex, England, UK
You might need a transmission rebuild. I have a 89' 735i and had the same problem so i checked the tranny and found that some parts were worn out and one of the gears for reverse were broken. I had it rebuild and taht did the job