Front end? sound

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Sep 28, 2011 | 01:34 AM

ztodd377

Thread Starter

Laughing Gas

Joined: Mar 2007

Posts: 898

Likes: 23

From: Tucson

Front end? sound

I posted a while back about a cyclical/rotational sound I was having that I thought was coming from the front end. It's more pronounced when on a curve to the right. Here's what I've done so far (and a big thanks to HH60FE for helping an FTE brother out with a lot of the install). I've replaced upper and lower ball joints on both sides, new hub assemblies both sides, new u-joints both sides, new outer "stub" axles both sides, and all new axle seals and dust seals, even the inner axle seals inside the front diff.

I'm still having the sound and for the life of me I can't think of what else it could be, especially with it being more pronounced curving right, and not there at all curving left. Rotors and pads are in good shape so what else could it be?

Thoughts? Suggestions? Any help is appreciated!

Thanks in advance.

Sep 28, 2011 | 12:30 PM

DemonRace6

Hi!

Joined: Sep 2007

Posts: 1,268

Likes: 0

From: Central NJ

Is the sound a ratteling or a metal on metal grinding?

Sep 28, 2011 | 01:49 PM

ztodd377

Thread Starter

Laughing Gas

Joined: Mar 2007

Posts: 898

Likes: 23

From: Tucson

It's a metal on metal cyclical sound (i.e. It changes pace with speed).

Sep 28, 2011 | 02:21 PM

PaysonPSD

Post Fiend

Joined: Nov 2007

Posts: 9,549

Likes: 14

From: Payson, AZ

Quote:

Originally Posted by ztodd377

I posted a while back about a cyclical/rotational sound I was having that I thought was coming from the front end.

Considering damn near everything up front is new maybe it's coming from the rear.

As an example: A loose e-brake shoe assembly that moves outward toward the inside of the top hat drum and makes contact when you are making a sweeping right turn.

Also a left rear wheel bearing. It's under more load when turning right.

Just throwing out ideas. Check out the rear. Time to think outside the box.

Sep 28, 2011 | 03:41 PM

DemonRace6

Hi!

Joined: Sep 2007

Posts: 1,268

Likes: 0

From: Central NJ

Seems like you have done all the big important items, what about small stuff like dust covers or rim rubbing on something?

Sep 28, 2011 | 07:25 PM

A/Ox4

9 ECHO 1

Joined: Aug 2009

Posts: 12,467

Likes: 58

From: Missouri

Back to square one. Can you jack up the truck and manually rotate each wheel to try to locate the sound?

Sep 29, 2011 | 11:29 AM

jgilrfr

Laughing Gas

Joined: Aug 2008

Posts: 804

Likes: 0

From: Staten Island,hamilton ny

Are you sure the hubs are unlocked?,could it be something in the front differential?IS it better,worse,or unchanged in 4 wheel drive?Ho are the u joints on the drive shafts?Carrier bearing?

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Sep 8, 2012 | 04:14 PM

Lex2002

Cargo Master

Joined: Aug 2011

Posts: 2,319

Likes: 89

Super loud gear whine at 30 mph plus

I have a crazy loud gear whine coming from the front end (or underneath me)starting at exactly 25mph and above, but only when I am accelerating (in 2wd). If I let off the gas, the whine instantly stops. It builds from nothing to quite loud until roadnoise matches its intensity.
It’s getting unbearable.
My friend, who is a professional mechanic believes its the front differential going bad. My truck has 198k miles on it.
I did change the center support bearing thinking it was the issue, but the whine is still present.
Anyone have any recommendations on a new front differential unit?