07 Overland Whine/Howl under acceleration - JeepForum.com
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Unread 07-29-2015, 10:07 AM   #1
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2007 WK 
Join Date: May 2012
Location: Churchville, MD
Posts: 16
07 Overland Whine/Howl under acceleration

I have a 2007 Overland with the Hemi and QD-II, and 155k miles. When I am accelerating, I get a really loud, resonating whining/howling sound between around 40 and 48 MPH. Above that it goes away, it is not being covered up by other road noise. It starts very abruptly at 40, it does not build up to becoming audible. It sounds like it is coming from the middle of the car, but it resonates so bad it is hard to tell.

It has been doing this for at least 15k miles and has not gotten any worse. From what I have read it could be the bearings in the rear, or the gears. I have also read that it could be the front driveshaft.

The local garage that does a lot of 4x4 work has a jeep specialist that will look at it for a few hundred, but I'm wondering it I should take the chance and rebuild the joint on the front driveshaft with the Dorman kit? It's about $80 on Amazon and I'm sure I could do the work, but I don't want to waste $80 and my time if there is not much of a chance.

Any other tips or ideas before I bite the bullet and pay to have it diagnosed?



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Unread 07-29-2015, 11:33 AM   #2
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2005 WK 
Join Date: Jun 2009
Location: Bay Area
Posts: 105
It certainly could be the front driveshaft. One thing to check would be if the rubber boot is torn. Once that happens all the grease flies out and it fry's pretty quick.

At 155K that joint is probably not in great shape anyways. Might be worth it to change out. Even if it doesn't solve this problem its one less thing to break down the line. I just did mine last weekend. Took about an hour, didn't even remove the driveshaft from the vehicle as that takes some work, just unbolted it front and rear and made the fix.

Be sure to get the right kit, they make two of them. Most people have referenced the Dorman 932-301, however from the research I did the correct one for my '05 Hemi QDII was actually 932-303. Not sure the difference.
mdimmick is offline   Reply With Quote Quick reply to this message
Unread 07-29-2015, 01:44 PM   #3
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2010 WK 
Join Date: Nov 2012
Location: beverly hills, ca
Posts: 442
I had the pleasure of running a rear diff nearly dry (in a previous vehicle), and that is the sound that a diff makes when it is using its own metal shavings for lubrication. If you've gone 15k miles hearing it howl (I went well over 20k), then you are likely 50k or more past the last opportunity to change your diff fluid and prevent this.

I was told to expect a grand to fix my diff and sold the car instead. The problem, as the OP notes, is that the wheel bearings will likely need replacement, if only out of caution, and that is still more time and money.

General mechanics--if they're good--send diff work out to a rear end shop. If this was my (current) rig I would ask around about who does rear ends, and go directly to them. Likely a very small operation and don't be surprised if you have to make an appointment. I would go to a diff shop to get a FREE appraisal and then go from there.
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Unread 07-29-2015, 02:06 PM   #4
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2008 WK 
Join Date: Jan 2013
Location: Greenville, Pennsylvania
Posts: 1,798
Driveshaft and rear diff are both easy to inspect yourself...get in there and do it.
08 5.7 Limited WK - Basic stuff...
caulk04 is offline   Reply With Quote Quick reply to this message

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