growling noise on our 2003 WJ when making tight 90 degree turns ? - JeepForum.com
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Unread 11-27-2014, 07:38 PM   #1
desert_sand
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2003 WJ 
 
Join Date: Nov 2014
Location: Palm Springs, California
Posts: 2
Wj growling noise on our 2003 WJ when making tight 90 degree turns ?

just bought a sweet 2003 Overland. Runs fine in a straight line, or when making a gradual turn. When making a tight 90 degree turn, there is a loud growling noise. Is this related to the 4X4 ? What is the best way to check for possible causes ?

thanks

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Unread 11-27-2014, 08:04 PM   #2
PatriotBlue02WJ
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2002 WJ 
 
Join Date: Aug 2014
Location: Palm Bay, Florida
Posts: 42
Does it sound like its coming from a certain wheel, or from the diffs? 1st step would be to pop the diffs open and inspect.
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Unread 11-27-2014, 08:40 PM   #3
PowderHound
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2003 WJ 
 
Join Date: Mar 2009
Location: Broomfield, CO
Posts: 295
It could be the front varilok axle doing its job and trying to lock up since one wheel is rotating more on sharp turns. Mine groans when doing a tight u turn; a light groan noise is normal. I'm not sure how loud yours is, but the varilocks do make noise.
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Unread 11-27-2014, 09:35 PM   #4
99SK04GTX
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2004 WJ 
 
Join Date: Jul 2009
Location: Hampton Roads
Posts: 537
wjjeeps.com is your friend. On that Overland you have a transfer case, a 247, that takes a special fluid only; no ATF+4. You have varilocs and they need mopar friction modifier to reduce the squawk in tight turns
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Unread 11-28-2014, 04:15 PM   #5
Louisianaboy
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2002 WJ 
 
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Location: DeRidder, La
Posts: 134
Yep. U need more friction modifier.... With a fluid change
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Unread 12-12-2014, 11:39 AM   #6
desert_sand
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2003 WJ 
 
Join Date: Nov 2014
Location: Palm Springs, California
Posts: 2
Wj Friction modifier is the solution !

Many thanks guys. Your advice was 100 % correct. After the dealer changed all the diff and trans case fluids - no more growling noise.( about $500. later )

Looks like the previous owner had taken it somewhere where they had put in the wrong fluid. Is the Jeep unique in needing this special fluid ? Would it be better to keep getting the dealer to do the 4 X 4 service, to ensure they use
the right stuff ? How often do these fluids need to be changed ?
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Unread 12-12-2014, 01:17 PM   #7
dcorn
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1998 XJ Cherokee 
 
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wjjeeps.com has answers to all your questions.
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Unread 12-12-2014, 03:32 PM   #8
Jeeples
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2000 WJ 
 
Join Date: Jul 2006
Location: forum/f310/, UT
Posts: 4,843
Quote:
Originally Posted by desert_sand View Post
Many thanks guys. Your advice was 100 % correct. After the dealer changed all the diff and trans case fluids - no more growling noise.( about $500. later )

Looks like the previous owner had taken it somewhere where they had put in the wrong fluid. Is the Jeep unique in needing this special fluid ? Would it be better to keep getting the dealer to do the 4 X 4 service, to ensure they use
the right stuff ? How often do these fluids need to be changed ?
It's not necessarily the gear oil/fluid, as it's the additional friction modifier that's needed to prevent the Vari-lok/LSD's from binding during tight turns. As others have mentioned, you can read more about how the Vari-lok differentials function in you WJ by going to WJJeeps.com

That being said, $500 is a lot of money to spend on having two differentials serviced. I'm not aware of your mechanical ability or know-how, but a differential service can easily be done in your driveway with basic hand tools. Even if you had to buy a basic mechanic's tool set, you likely would have been under $200 in tools and fluids (depending on how crazy you wanted to get on your fluids).
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