93 Bronco rear end clunking

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Busters - 19 Jun 2008 03:00 GMT

Full size Bronco 4x4. The u-joints seem to be ok. Not loose when checke
with the truck on jack stands and in neutral. There just seems to be
lot of play at the rear end. When starting off from a full stop i
clunks 3 or 4 times.
Any ideas for the cause of this and what I need to do to fix it

--
Buster

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Jeff Strickland - 19 Jun 2008 03:33 GMT

My brother has a '94 Bronco, and his has done this for going on 8 years. I
had a '95 Eddie Bauer Bronco, and it did this. I also had a '94 XLT that did
not do it.

I've been told that the drive shaft itself is causing the clunk. My Eddie
Bauer had toasted motor mounts, and I was sure the clunk would go away with
new mounts. Wrong. I understand the reason why the drive shaft could be the
problem, and I think that if you really want to fix this, dropping the
driveshaft, marking the parts to be sure it remains properly aligned, and
clean and relube the slip joint. You might want to consider new u-joints for
no other reason than the shaft is going to be out anyhow. Having said that,
my brother's Bronco has been doing this for as long as he's owned his truck,
and it does not seem to get any worse over time. He even uses his truck for
offroading -- he goes to primitive campsites in the desert.

> Full size Bronco 4x4. The u-joints seem to be ok. Not loose when checked
> with the truck on jack stands and in neutral. There just seems to be a
> lot of play at the rear end. When starting off from a full stop it
> clunks 3 or 4 times.
> Any ideas for the cause of this and what I need to do to fix it?

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Oren - 21 Jun 2008 00:06 GMT

>Full size Bronco 4x4. The u-joints seem to be ok. Not loose when checked
>with the truck on jack stands and in neutral. There just seems to be a
>lot of play at the rear end. When starting off from a full stop it
>clunks 3 or 4 times.
>Any ideas for the cause of this and what I need to do to fix it?

Inpect the rear mount on the trasmission and the drive shaft yoke(s).

Shade Tree answer.

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Spdloader - 21 Jun 2008 03:41 GMT

Pull apart the rear drive shaft, clean the splines, and lube the crap out of
them with some good quality grease. I tapped mine for a zerk, so I can just
lube it when it's serviced. Takes care of most every one of them.

Spdloader

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