I just got under my truck and pulled on the driveshaft... and sure enough, it's loose at the rear u-joint. It was hard to tell exactly how much it was moving, but I'd guess it had ~.020-.030" of play. Thanks again for the tip guys, it does seem like that was the problem.


'87 Xtra Cab, 4wd, 22r, 5spd
'92 Xtra Cab, 4wd, 2L-TE diesel swap, 5spd
http://toyotadiesel.com/forums/showthread.php?t=2502