My '91 735i has a broken transmission. Drive through first does not work - the transmission will only work in reverse. The ATF has a burnt smell.
Does anyone know what what the problem could be? Can you give me a rough estimate as to how much it would cost to fix?
Sounds like the front clutch pack burnt out.
Because of the labour involved, it's usual to do a complete overhaul when this happens - it all has to be thoroughly cleaned including the torque convertor which is sometimes cheaper to simply replace.
or do a MANUAL tranny swap, MUCH more desirable and will work forever... we have all had slushbox problems!
Manual boxes come with clutches that wear out too. As does the synchromesh.
I had loads of manual cars including two 735i's, did lots of miles and never needed a clutch.
A lot depends on how you treat it.
You have to be a pretty bad driver to wear out synchromesh, and hey the gearbox still works without it.
In any event work on a manual box or an exchange manual box are very cheap compared with costs for automatic.
On mst recent BMW's the computers know what sort of gearbox the car has, and won't work with another sort.
Same with an auto, I suppose. The clutches take more stress if hard driven.
It may still 'work' but not properly.
It depends on what breaks. If you get actual gear problems on a manual you have to replace all the internals to get it back to new - and that can cost.
Seems so.
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