AX-15 Transmission Shudder


TJ Enthusiast
Supporting Member
Mar 12, 2019
Rocky Mountain House AB
99 4.0 with an AX-15. Got the transmission rebuilt (new synchros gears) but it sat a lot this summer as I've been away.
Last weekend, I hopped in for a rip and when I eased out into traffic from a stop sign, it shuddered after I came out of first and into second. I thought I could feel something wobbling on the underside. Fluids are good, exhaust hanger was re-welded... missing a bolt on the transmission mount but otherwise good or better looking than before. Shifted smooth too. Doesn't happen every time either.
Any idea where I should start looking before I start ripping it apart? Anything I might have overlooked?
TIA to all the TJ clan