Rear Shuddering and banging when turning right from Stop

[Ernie1776]

I have a loud banging and Shuddering (possibly like a binding) coming from the rear (possibly rear driver side or that just could be because i'm driving and my ear is on that side) when I start from a stop and accelerate while turn right (It seems worse when turning right uphill from a stop). It also seem worse when backing up from a stop with the wheels turned right. I took the rear driveshaft off and drove it in 4H and it seemed to disappear. I have 4.11 gears, 28 spline, big bearing, limited slip. The Ujoints seem fine, changed rear fluid within last 3-4months (still is full). Ive read several threads and they seemed to die before resolution was mentioned. I'm leaving for the beach in 2 days so with limited time to work on it so I was hoping for some direction to get the most out of my limited time. Thanks in advance for your time. I should also add, while im comfortable pulling axles and replacing bearings, my knowledge of the third member and differentials is limited.

 

[Viperwolf1]

Did you add any limited slip additive with the oil change? It's slippery stuff that keeps the clutches from grabbing like that.

 

[Ernie1776]

yes i added the limited slip additive

 

[Viperwolf1]

Might need more. It's possible you have something broke back there but with the coincidence of the oil change I'd put another bottle of additive in it before tearing the diff out to inspect it.

 

[DirtDonk]

Is it just an old original factory limited-slip diff? Or is there something in there like a Detroit Locker?

Even though it sounds like it started after the fluid change, is that the case? Or was it doing this slam/bang/dance thing before? If so, how long?

Also, is the Bronco stock heigh, lifted? If lifted, how much?
Driveshaft and u-joints old and tired maybe? You ever lubed not only the joints, but the centering yoke and ball too?
That would be 4 grease points at least, plus the extra 1 at the end of the shaft for the splines. Might be a combination of all of the above.

Good luck. Have fun at the beach.

Paul

 

[Rustytruck]

Doe's it do it if you roll through the corner without accelerating untill you get around the corner? If you have a detroit locker back there they dont like to be torque loaded on tight turns. If you have a Ford limited slip you will have to pull the axles and check the splines and probably pull the pumpkin and check the center dif housing and see if it is cracked.

 

[Ernie1776]

This just started happening 2 days ago the fluid change was 3-4 months ago, I have only had this bronco 3 years, so I am unsure of how old the driveshaft is or if its the factory Limited slip (it was supposed to be a frame off restore 5 years ago). It has a 2.5" lift, I lube the U-joints/driveshaft every 3-4 months with oil change however I have only lubed the one in the yolk twice since Its such a pain to get to.

It seems to be fine if i roll around a corner however, if i accelerate is when it really happens. Since its inexpensive and easy i'll try changing out the u-joints and add some more additive. if its still having issues ill pull the axles... hopefully i wont have to leave the bronco behind for the beach trip.