I've been having problems with my driveshaft from the transmission for some time now. The seal was originally leaking, so my mechanic put a new one in, then one day I was driving down the highway doin about 80 and went to shift into 4th from 5th and completely missed and went into 2nd. After that the tailshaft seal was redone again, with a stronger seal that held a lot better. Long story short, I ended up replacing my transmission with a new transmission with only 4k miles on it, and this morning I did a 30 roll on the highway from 2nd and now my car is smoking again from an oil leak in the driveshaft, from the tranny. This issue has been goin on since august, and I would really like for it to be taken care of asap but idk what the problem is.
tailshaft problem
- Thread starter Jaffman088
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The only common part to all of this appears to be the drive shaft sleeve yolk. I assume the seal has been properly seated and not damaged during the installation and the yolk has no wear marks and is given a coating of lightweight grease before it's installed. If you are 100% certain that's all done correctly I would look to a drive shaft imbalance issue or u-joints.
Adam95GT
New Member
You need to take a scuff pad and clean the rust off. It needs to be polished to like new. Make sure there is no cuts or gouges.
Do what Adam says, and put a fresh seal in there to get a good break in. The rust may have torn up the seal.
Kurt
Kurt
yeah, that is what I was told to do, but then I had the transmission looked at. They took the tailshaft out of the transmission, and apparently the rear bearing was bad to begin with and the yolk does need to be replaced. It shouldn't be bad because the transmission was just redone 2 weeks ago....this problem should have been diagnosed from the start.
Agreed. Was the shop a national chain? Not that that's bad as most national shops are franchised so the work is as good as the technical/mechanical staff. What I have discovered is that there are usually a few outstanding shops in most areas if you make some inquiries.
The rear bearing of a Mustang transmission (not going to make a model discrimination because they are all the same) is actually a bush. They are hard to diagnose on a bench, because it is in an inconvienient location. It is a pain to change out. I won't attempt a bush change unless the tailshaft is removed from the transmission. I know a few people who will do it with a slide hammer, but the sand cast aluminum tail section brakes pretty easily. I prefer to have the tail section seperated so that it can be tapped out with less stress on the casting.
Kurt
Kurt
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