Torque tube - anyone have these symptoms?

[BobCT]

I did see a small silver sliver when I changed the transaxle fluid. Starting to feel like it might be that, I don't think I have the traditional torque tube noise(s). Car has 94k miles on it.

Has anyone had a torque tube noise that sounds exactly like a rear wheel bearing drone? (Bearings replaced by me, no change).

I can “feel” some sort of rotational vibration if I put my hand around the shifter boot while driving and that doesn’t really change whether the car is in or out of gear. I can't replicate this feeling/noise unless the car is moving. I don't get any noise in or out of gear when parked. It drives and shifts great and if I stay under 30 MPH or so you can't hear anything. Highway speed is a loud howling coming from the rear.

Anyone else gone through this? I have a lift, is there a definitive way to rule the TT in or out? If not the TT, it has to be the transaxle wouldn't it? '86 Turbo.

thanks
Bob

[soxnail]

Does it change depending on which direction you turn while at speed ?
Sox

[944 Ecology]

Definitive way to isolate the TT bearings:

1) Disconnect TT drive shaft from transaxle by sliding coupler back towards the input shaft.

2) Rotate the TT drive shaft by either:
a) running the engine with the clutch pedal up
b) clutch pedal down, spin the driveshaft by hand.

Note: I always tested the bearings with the TT out of the car, in a dead quiet room, spinning by hand.

[BobCT]

Originally Posted by soxnail

Does it change depending on which direction you turn while at speed ?
Sox

I’ll do that test again, I don’t think so.

[BobCT]

That’s a good idea. If the noise is TT related, I would think it would be easy to hear/feel based upon what I hear driving.