Rear end vibration

[85MercPark]

I noticed a slight vibrtation this morning that seems to be from the rear. Starts about 30 and lets up at 35. Barely noticeable, but I notice every little noise or strange feeling. Any ideas?

Also
I have also noticed a noise from my AOD. It is sort of a whiny moan when I accelerate. Not everytime, just on occasions. Seems to be throttle related because I can stop it by letting up. Could it be a vacuum leak?

[Blaze86Vic]

Probobly a worn bearing in the rear axle, most likely the axle shaft bearings.

Tranny noise is probobly just hydrolic noise, nothing you can really do about it, and it's not nescecerily a bad thing. Try changing the fluid or maybe an addative might help as well.

[85MercPark]

Will it get progressively worse, or fail all at once?

Could be a good excuse to switch to 3.55
:banana:

[Blaze86Vic]

I could get worse over time, but failing takes a really long time, or something really bad.

[Lincolnmania]

could also be that the universal joints are dried up........common on a low mile 20 year old car lol.............my universals were a little sticky on my car......i had a vibration around 40-55
come down sometime and i'll check it out for u
scott

[Blaze86Vic]

He's right it could be that, I forget that not everone has grease fitting on their U-joints. It's a well worth the investment, it's very cheap, and it's easy too.

[85MercPark]

True.
I had my rear U go out on my LTD wagon. Drove it for a week with no bearings in it. Shook like a banshee...
:slug:

Will definately give that a looking into.

[phayzer5]

alot of AOD's have a whining turbine like sound when accelerating in first gear. Does it "clunk" when you let off the gas and then get back on it?

[85MercPark]

alot of AOD's have a whining turbine like sound when accelerating in first gear.

Yep, that's what I got. No clunky sounds though

[NATEHAWK]

Whats does that clunk mean?

[85MercPark]

Well, after lowering my Air Shocks back down to 30 lbs instead of the tooth rattling 120, the vibration seems to be gone. I am guessing it is the Universal joints and the angle of the drive train brought attention to it. Gonna change them payday...