T5 Help

[back2fox]

I have an '86 Mustang GT. I bought it with a nasty vibration above 3K rpm's. What I have replaced; harmonic balancer, tranny mount, driveshaft, clutch kit w/ pilot bearing, and resurfaced the flywheel.

All of this helped but it still vibrates through the shifter above 3k rpm's. It's driving me crazy. The tranny shifts great and no noise. Could something still be wrong inside the tranny for it to do this?

Any suggestions?? Thanks

 

[Mustang5L5]

Does it happen at 3K rpm's no matter what gear the trans is in???

 

[Black1987Stang]

Does it happen at 3K rpm's no matter what gear the trans is in???

I got somewhat of the same problem or well did....I had 3 bolts holding the trans onto the bellhousing, it would have a whine in 1st gear and in 5th gear the shifter would vibrate like crazy and make a noise like something was loose, hard to explain, but I got another bolt for the trans and now its quiet and has no vibrations like it used to......mine did it only when I was above about 55mph in 5th gear....you said u replaced the clutch and all that, figuring u would have noticed if it was missing a bolt or if one of the tranny-to-bellhousing bolts was loose if u did it yourself, n if it started doing it after u just did the clutch or before

 

[stangbear427]

When my old T5 did that it was the input bearing where the DS slides in. Check for fluid around the end of the tranny/front yolk on the DS. If that's not it, you got me.

 

[Beasly B]

A bent input shaft can cause what your describing, may be internal.

 

[back2fox]

Thanks for the replies. It's worse in 1st and 2nd gear. I will be pulling the tranny back out this weekend and checking inside.

I drained the fluid tonight and it had a metallic look to it.

 

[FOXtool]

CHECK YOUR MOTOR MOUNTS, MAKE SURE THEY ARENT BROKEN OR SAGGING.

 

[stangbear427]

Turn off your caps lock

 

[back2fox]

Finally figured it out. Thanks for the input.

There is a small nick where the bearing rides on the input shaft. The more pressure put on it in the higher rpm's would cause the vibration. So aggravating, well atleast now I have a new driveshaft, balancer, clutch kit, mounts....