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Discussion Starter · #1 ·
Alright guys an gals, hopefully y'all can help me with this issue I'm having. This past summer I put a new lift in my jeep and since then when I take off from a standstill or if I accelerate while driving there's a thumping noise coming from the floorboard in the trans hump area near my feet. You can feel it and hear it. I can't seem to figure out what's causing it. Any suggestions or similar problems? Hopefully y'all have somthing, because it's driving me nuts.
 

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X2, that thumping is very likely nothing more than a broken transmission mount or motor mount. If the shifter is swaying left/right more than usual as you rev the engine, it's probably a broken motor mount allowing the engine to lift up/move around from torque as you rev it. If the shifter doesn't move left-right more than usual, it's probably a broken transmission mount.
 
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