growling noise on our 2003 WJ when making tight 90 degree turns ? - JeepForum.com

 
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post #1 of 8 Old 11-27-2014, 06:38 PM Thread Starter
desert_sand
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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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post #2 of 8 Old 11-27-2014, 07:04 PM
PatriotBlue02WJ
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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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post #3 of 8 Old 11-27-2014, 07:40 PM
PowderHound
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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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post #4 of 8 Old 11-27-2014, 08:35 PM
99SK04GTX
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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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post #5 of 8 Old 11-28-2014, 03:15 PM
Louisianaboy
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Yep. U need more friction modifier.... With a fluid change
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post #6 of 8 Old 12-12-2014, 10:39 AM Thread Starter
desert_sand
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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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post #7 of 8 Old 12-12-2014, 12:17 PM
dcorn
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wjjeeps.com has answers to all your questions.

2014 Jeep Grand Cherokee Summit
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post #8 of 8 Old 12-12-2014, 02:32 PM
Jeeples
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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).

His: '00 WJ 4.7 Limited- Some stuff

Hers: '03 WJ 4.7 Laredo- Some more stuff

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Originally Posted by wjjeep19 View Post
It is what Jeeples has *PARTIALLY* stated.
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