i have a popping noise when driving in 4wd. i feel a small jerk that accompanies the pop. what can i do to troubleshoot this issue before taking things apart? is this most likely the tcase, front axle or maybe u-joints? this is a '93 with the np231.
edit: i realize "4wd drive" in the title is redundant.
edit part 2: popping noise frequency increases with speed.
edit: i realize "4wd drive" in the title is redundant.
edit part 2: popping noise frequency increases with speed.
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