Zeroto90

Hey everyone, i have a 1988 mustang GT, it began making noise from the transmission, and then a few days later it began to leak lots of ATF from the rear, (where the drive shaft goes in) i removed the drive shaft and theres lots of play on the transmissions rear shaft, what happened here? did a bearing fail or something?

Bert

That shaft does move some with the driveshaft out. If the driveshaft moves quite a bit when installed, the rear bushing that the driveshaft rides in needs replacing. It probably only needs the seal replaced.

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Bert

Zeroto90

Thanks for the information, do you know what would be involved? should i pull the transmission or what? Can just the rear cone peice be removed?

jwko

If its just the seal, you would only have to slide the drive shaft out to replace. If it is the rear bushing, the whole tail piece would need to come off. Like rtg said, its normal for the shaft to have a little up and down play with the shaft in, and more than likely only the seal.

Zeroto90

well the rear seal looks like its in good condition, and before the trans started leaking it was making alot of noise, at first i thought i had a wheel bearing going out because thats what it sounds like, so what are the possibilities that its worse than the seal or the bushing and might be the bearing?

Bert

A seal can look good and still leak. They wear evenly and there's no way to tell by looking at them. Raise it up on stands and run it to locate the noise. That way you'll know what has to be fixed.

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Bert