Hello Kings of the road,
Please head me in the right direction.
I have a 1992 BMW 735 IL ( 3.5L ) ( Automatic / Manual Transmission which I think is a ZF 4 HP 22 EH )
She has been doing wonderful, runs great handles well, shift good, etc...
Today, I was accelerating to merging into traffic and she seemed on top of her game, when instantly and smoothly the transmission seemed to just go into neutral.
No noise and no jerk. It was there and then it wasn't.
Tomorrow a friend is bringing a trailer to pick her up from the parking lot that she coasted into.
I was looking through the manual and saw that the brakes and the clutch hydraulic system used the same fluid tank and she was low on brake fluid, so I filled the brake fluid tank and tried again with no change. ( Is this mention of a clutch hydraulic system only on manual transmissions ? )
I came home and have been doing some research and I see mention of a flex disk in the drive shaft that one poster says should be checked first, he says that it can split or disconnect yet not be noticeable, however when I do a parts search the 1992 735iL does not seem to have one - I will be able to check tomorrow.
There is also a mention of a CV joint on the driveshaft - Could this shear smoothly with out jerking or noise?
I was scanning for items on the outside of the transmission that may be causing this disconnect response.
No burnt smells, fluid looks good, level in transmission has not changed, no leaking, etc….
Any suggestions on what it could be and how to check it ?
Any advise would be greatly appreciated,
Cutey
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