Community Q&A Question: Strang vibrations

Asking About: Mustang 8.8" Rear Pinion Flange (86-04)


Strang vibrations

My 1990 LX 5.0, T-5Z has a thrumming sound vibration, only in 5th gear starting at 55 m.p.h. and growing louder as I go faster. Seems to come from the rear. Trans. mount and aluminum drive shaft are good so, as it is origional, I suspect the rear pinion flange. Also a slight drip is visable there. The part isn't expensive and I have a friend with a lift. What do you think?
from N Chesterfield |
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Accepted Answer
It's hard to say for sure if this will fix your problem, but it would be worth a shot. I had an '89 LX and after 3.73 gears were installed I was getting a howling noise around 60mph. I thought it was installer error at first, but I had a leak as well. I replaced the pinion flange and never had another sound or leak come from the rear end after that.
from Hewitt |
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