Hi Everyone, in my WJ (details in Sig) under hard acceleration, wet or dry road, I notice a thumping noise that I can reproduce every time. Under 3/4 throttle it doesn't happen but under WOT at all. The noise is like a consistent fast beat not like as if gears were stripping and you had it thumping erratically. You can feel it from the Drivers seat. Normal acceleration is smooth no problems no noise.
It doesn't seem to be Motor related as it will rev with no issue, coasting in N is smooth.
I checked the Forum for noises and found one from around Feb-Mar 2010 where the person found that it was a cross member the other had exhaust banging.
It makes me think of Trans slippage, yet the Jeep pulls the same as it did with 90k on it... While I'm talking trans, on occasion it in the morning if I jump in put it in gear and gas it, it feels like a manual car where trans/clutch isn't engaged, but if i wait 10 seconds, its perfectly normal...
The bushings on the suspension, front and rear sway bars, are aftermarket and I grease them often. I was also thinking that with the rear squatting and the front picking up maybe it was that but If I mashed the gas till 100 it makes that noise the whole time...
I can post a vid at some point if that helps.
Shes got 106k with normal fluids changes TC and Diffs (by Jeep with the Mopar fluids) as scheduled.
This is my first AWD/4WD vehicle so if its something simple go easy
Any Ideas? Thanks all.