FJ Jake

Just ordered new front drive shaft to see if that fixes problem. I will keep you updated.

MeMongo

I have a similar noise on acceleration in mine. 3.5" lift and 35". I can kind of feel it in my steering wheel. Guess I need to invest in a driveshaft.

mpkelley20

I doubt this is it since mine is a 2010 so it's s bit different but I had a grinding/grunting sound upon initial acceleration before and dealer tried everything to find it but couldn't.

During a not so routine need to change my auto sump pan, I had to take off my auto trans skid. When new pan went on I took it for a ride without the skid and noise was gone. I put the skid on and it came back. Found that the skid was making contact with part of my exhaust so I added a couple of washers under the bolts to drop the skid like 1/8" or so. Noise hasn't been back since.

I know the skid plate became a skid bar in 2011 so not sure if I'd have the same issue if I had that. Have no clue on design of new engine maybe check out skids as well.

Arisdocjk

Curious to see if driveshaft fixes problem. I think the problem is either that or some heat shield that I can't locate.

cmueller

I had same problem and found by lifting up on my front bumper I found the sway bar bushing creaked and transferred the noise to what I thought was my transfer case. Took apart sway bar at frame mount, move bushing inward and lube with white lithium grease. Solved for me.

Edrenner

Guys I had the same issue at low speeds and at take-off. It turned out to be the passenger side front lower control arm. The installer had it misaligned and it was binding at low speeds. I had to take off the rear bolt, adjust it and reinstall. Noise is gone.

FJ Jake

New front driveshaft installed and much better. Still hear sound but not nearly as bad. Will see how it goes

FJ Jake

Second day, sound only a bit better. Well time to start finding other options. Does anyone know any place that does modified jeep work herein RI? Dealership won't touch it

Atch

I had a similar issue, turned out tranny skid plate was pushed up into my exhaust

FJ Jake

Looks like my issue is when jeep was re-geared it was not done correct. Will get fixed next week and update.