205jk

Hi guys,

In need of a little help. When I put my Jeep in 4wd it makes a loud almost like popping sound or like something is grabbing in the front to middle of the drivetrain. It's worse in 4 low than it is in 4 high. In 2wd you can't really hear it unless the windows are down and drive a a very low speed. Seems to be a little worse when I turn in 4wd. It's seems to be near the front driveshaft or transfer case, but not sure if either of these may cause this sound. Will take any advice given. Oh and specs of the JK is 4" lift stock shafts and 35's. All was installed when I purchased it.

MMXJKU

Check your axle u-joints.

205jk

Thanks. That's what the Mechanic at my job said but when he checked them he said they seemed tight and good.

Jersey_Devil

Check the front drive shaft cv joints

205jk

Thanks. Soon as it dry up outside I will get under it and check it out. I

Schlieko

It was the drive shaft for me. I pulled back the boot and saw shaved metal. I had no problem in 2WD, but exactly what you describe in 4WD. Worse in L then H, more pronounced on turns. Mechanic told me U-joints. Nope... Needed a new drive shaft.

Jeepstin12

Check all these guys suggest. A question. Have you changed your diff fluid? If so, what fluid? Additives? Etc., etc.....

205jk

I noticed the boot was ate up pretty bad this afternoon and the shaft has a bit of play in it so think I'm going to yank it out and see what happens without the front shaft in. Really hoping that's it!

205jk

No I have not. I bought my Jk beginning of Nov and dealer claim they done full service when I bought it. I'm new to the Jk world.

Jeepstin12

hopefully they serviced it properly........