Weird 4x4 issue

[Buck_nekid]

I have an 02 limited, 3.7, NP231. The issue is that it will not go into 4x4 unless I come to a complete stop and put the transmission into reverse. It doesn't have to move in reverse just the little bump you would get in any vehicle by shifting it into gear. I know what caused it. I let my buddy borrow it and my driveway is semi-steep. He said he started spinning (knowing him he was wide open) and slipped it into 4x4. I bet he had the front tires going 0 mph and the rears going hard to tell how many mph. Has anyone had the NP231 apart and can think of what happened inside of it? The shifter linkage is good. I've tried every possible combination of shifting the transmission and transfer case, it definitely needs its input shaft turned in reverse to engage 4X4. Thoughts of what to look for when I drop it and split the case?

 

[lfhoward]

I have an 02 limited, 3.7, NP231. The issue is that it will not go into 4x4 unless I come to a complete stop and put the transmission into reverse. It doesn't have to move in reverse just the little bump you would get in any vehicle by shifting it into gear. I know what caused it. I let my buddy borrow it and my driveway is semi-steep. He said he started spinning (knowing him he was wide open) and slipped it into 4x4. I bet he had the front tires going 0 mph and the rears going hard to tell how many mph. Has anyone had the NP231 apart and can think of what happened inside of it? The shifter linkage is good. I've tried every possible combination of shifting the transmission and transfer case, it definitely needs its input shaft turned in reverse to engage 4X4. Thoughts of what to look for when I drop it and split the case?

This is a strange one. I wish I could help you out, but I haven't heard of this happening before. I bet it will be easier to fix your manually shifted NP231 than the electronically shifted TC on the later models.

Welcome to the forum! What part of WV are you from? Dolly Sods Wilderness and the Canaan Valley are some of my favorite places to camp & wheel.

 

[Buck_nekid]

This is a strange one. I wish I could help you out, but I haven't heard of this happening before. I bet it will be easier to fix your manually shifted NP231 than the electronically shifted TC on the later models.

Welcome to the forum! What part of WV are you from? Dolly Sods Wilderness and the Canaan Valley are some of my favorite places to camp & wheel.

Yes I've tried to explain the issue to a few people and they say "it doesn't work that way," until I take them for a ride then it's "Humm, weird" I guess I'm got my weekend all planned out.

I am up north in Wellsburg (in between Weirton and Wheeling) in Brooke County.

 

[JeepJeepster]

Im assuming its not always been like this?

Ive found that all tcases will shift better if you are rolling 2-3mph in N. They normally always pop right in.

Its tough to get them to shift when youre stopped.