rear suspension problem...maybe?

doboys150 · Mar 22, 2015

I have a 95 with 119,000 miles on it. When I accelerate I get a thump in the rear end, when I let off the gas I get a thump in the rear end. When I'm coming to a stop and get on the brakes I get a thump. I thought it was a rear diff issue because I had quite a bit of in and out axle movement, so I rebuilt the rear trac-lok diff, and still getting the thump. Everything in the Bronco's driveline seems tight, so I'm starting to wonder if it's something in the suspension, possible worn out leaf springs or bushings. I'm going out to the garage and putting jackstands under the frame, and letting the suspension go to full droop. Hopefully I can find something that's wrong, this is starting to get on my nerves. Any help or suggestions would greatly be appreciated.

nelbur · Mar 22, 2015

I wonder if the slip joint on your driveshaft needs to be lubed.

Bully Bob · Mar 22, 2015

Hi doboys..., welcome.!

There could be complete axle shift (axle wrap) do to old springs.

This is common on the EB (66-77)

And yes.., this movement can have an affect on the dr. shaft.

doboys150 · Mar 23, 2015

I went through the suspension, and other than needing shocks everything appears to be ok. I decided to pull the drive shaft, after about a half a can of PB Blast, breaking out the torch, a big breaker bar and a few choice words the drive shaft came out. The slip joint was definitely dry. I greased it up real good, put the boot back in place and reinstalled the drive shaft. I have no more thumps, clunks or any other weird things going on back there. Thanks to nelbur for his expert advice, the slip joint was definitely the problem.

Elmo · Apr 7, 2015

DoBoys we all appreciate you reposting your findings and keeping us informed. THAT tells the helpers and those who are looking for advise alot. THANKS

miesk5 · Apr 8, 2015

yo doboys,

WELCOME!

GOOD DIY and thanks for posting your fix.

btw.

FYI,

96 Bronco-F-Series Workshop Manual (PARTIAL)

http://www.diesel-dave.com/vehic/manual/stj/stjleft.htm

Same as most earlier years exc. for OBD II in 96, 4WABS (93-96); ABS (87-92); Air Bag (94-96); 3 ***** Automatic Locking Hubs (Built from May 95 through 96); Spark Plug Wire Routing & Firing Order (The firing order for 1987-1993 5.0Ls is 1-5-4-2-6-3-7-8. The firing order for 1994- 96 5.0Ls & all 5.8Ls is 1-3-7-2-6-5-4-8.);

Two-piece Spindle Rolling Diaphragm Seal (RDS) used on 5/95 to 96 Broncos & F Series 1/2-ton 4WD

and a few other items that I still need to research

and a few other items that I still need to research.

Brochure, 95 Bronco

Source: by Foed via miesk5 at http://www.supermotors.net/registry/3549/79188

rear suspension problem...maybe?

doboys150

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nelbur

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Bully Bob

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doboys150

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Elmo

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miesk5

96 Bronco 5.0

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