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Unread 07-29-2015, 03:29 PM   #1
psheffern
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2008 JK Wrangler 
 
Join Date: Feb 2012
Location: Wyomissing, Pa
Posts: 179
Noises after beach driving

So I just took a trip to the OBX last week and drove on the beach a bit. Had the hot tranny oil light cone on so I would pull over and let it cool down and it would be fine.

Now that I'm home I hear some noises. Tranny seems fine while driving but shifting from park to any position makes an almost crunching sound and I hear a sort of wobble/knock coming from under the rear. Possibly the rear diff or axle? Not tire related as far as I can tell. Air pressure and all are fine. And the wobble/knock noise comes even if I am just rolling out of my parking space at work.

Possible sand causing the crunching sound? But no idea about the wobble noise. Again a noise not an actual wobble. Any help would be great before I need to bring it in.

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Unread 07-29-2015, 07:05 PM   #2
79cj7amc304auto
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2013 JK Wrangler 
 
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Manual or auto? If u shifted gears on a manual u could have let sand into ur drivetrain. If it's an auto then I got nothing for u. Did u hit like 8k rpm's revving it in 4lo maybe? Rpm's will creep up on ya in 4lo. I'd replace the engine w a hemi or an LS!!!
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Unread 07-30-2015, 10:49 AM   #3
psheffern
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Auto. The gear noise went away today but the rear noise is def still there. All I need to do is start rolling and it the whop whop whop gets faster. That's the best description I have for the sound.

And when I use the gas it sounds like a raptor from Jurrasic Park is riding along underneath. Lol

I didn't get the RPMs up that high, def not, made sure I ran it real slow. Although I did have two friends take it out with their families seperatly so don't know what they may or may not have done. But the hot tranny oil light did come on for them also.
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Unread 08-01-2015, 09:27 AM   #4
nighowl2000
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id get your auto transmission fluid serviced asap. probably burnt the fluid. When is the last time your replaced the diff/transfercase oil? Have you checked your drive shaft seals?
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Unread 08-01-2015, 12:01 PM   #5
JIMBOX
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Above advice good and you're way overdue for an aux cooler for the tranny--

The 42RLE auto NEEDS additional cooling in the pre 2012 JK/JKU-DESPERATELY !

Good luck

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Unread 08-01-2015, 05:47 PM   #6
Maertz
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Quote:
Originally Posted by JIMBOX View Post
Above advice good and you're way overdue for an aux cooler for the tranny--

The 42RLE auto NEEDS additional cooling in the pre 2012 JK/JKU-DESPERATELY !

Good luck

JIMBO
Mines been fine for years in the new mexico summers wheeling all day. Not once any problems...
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Unread 08-02-2015, 01:07 PM   #7
psheffern
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I had my mechanic friend take a look, or at least a listen, and I noticed that the driver rear wheel seemed to have a little wobble from top to bottom as it was rolling down the road. He also noticed it and thought maybe rear axle bearings. Sounds like a possiblity.

I have never changed the tranny or diff fluid in the two years that I've owned it, and don't know when it a dorm last, so that might be a good idea
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Unread 08-02-2015, 01:32 PM   #8
J3PH3RY_J33P
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you don't have dried sand / lumped up debris within your inner wheel do ya? If you haven't changed the tranny case fluid and diff fluid in that long i would sggst you do so immediately and check everything out ... lift that rear corner and check the roll yourself to see where she's wobbling from.... good luck

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Unread 08-02-2015, 03:37 PM   #9
psheffern
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Got an apt at the dealer wed and hoping its warranty work. Thx guys
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