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Popping in 4wd?

yossarian19

NAXJA Forum User
Location
Grass Valley, CA
So, I think it is the transfer case chain.
The symptom was a lot of popping noise while wheeling today. I have two noises that I already know about, a wearing ball joint and a cv joint getting loose, but while in 4hi and especially 4lo I got a lot pops while moving slow, like foot on brake and letting off slowly. Much more often than I get either of my familiar noises.

How does one diagnose a chain?
 
Last edited:
My 89 with a np242 started popping once in a while in 2wd on the way down to the desert.

Progressed to a violent pop - bam bam whilst wheeling, but only lasted a second each time.

Looked for busted ujoints ect.

Turned out to be the plastic shift fork pads in the t-case were worn out and it was popping out of gear.

Something to check out.
 
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