rear end noise

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Mar 3, 2006 | 10:54 PM

6fan

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Trailering

Joined: Mar 2003

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rear end noise

I have a squealing noise in the rear after I drive for 10mins or more. It sounds like crickets. It seems like once the gear oil heats up thats when it starts. It is mostly from take off to 20mph but after driving a while I hear it upto 40mph. Any suggestions???

02 250 4x4
6" superlift
28000 miles

Mar 4, 2006 | 12:49 AM

donjamer

Moderator

Joined: Aug 2005

Posts: 164,377

Likes: 82

From: MA

I would look at the U joints first and any carrier bearings to see if there is any play. I don't think they have any grease fittings on them , but I would replace them with grease fitting bearings. If you grease them regularly you will never have a problem again..

Mar 4, 2006 | 03:30 PM

6fan

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Trailering

Joined: Mar 2003

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I got the u-joints replaced today both on the rear d-shaft. Didnt help.No biggie shifts easier from park to drive now. The new ones are greasable any advice at getting a grease gun in there. I guess I'll have to keep driving to see if noise gets worse. Just a little concerned about possibly burning something up!

Mar 4, 2006 | 08:07 PM

99f350sd

Lead Driver

Joined: May 2003

Posts: 9,303

Likes: 48

From: Lyndonville, Vermont

Get it up in the air when its doing it and find out exactly where its comming from. If its the rear end then its gotta be looked at soon.

Dick

Mar 4, 2006 | 09:09 PM

clux

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Joined: Feb 2002

Posts: 10,600

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From: Carhenge

Symptoms sound like the problem a lot of guys had with the center driveshaft carrier bearing, I think it was on '01 & '02 models.

Mar 4, 2006 | 10:33 PM

FortyFords

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Joined: Jan 2002

Posts: 5,859

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From: USA

Any wetness around the pinion seal on the rear diff?

Chk for play on the output shaft of the transfercase also

Rich

Mar 5, 2006 | 12:21 AM

6fan

Thread Starter

Trailering

Joined: Mar 2003

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No wetness nothing leaking... Awhile back had to replace the rear seal b/c that was leaking. Did the classic oil flinging all over the undercarriage! Could anything have been disturbed when I changed that out? Another factor is it only seems to squeal at one certain point of the driveshaft rotation its not a continuous noise all the way through one revolution.