np231 wont shift to low
#1
Thread Starter
Newbie
Joined: Feb 2011
Posts: 14
Likes: 0
From: eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.0
np231 wont shift to low
hey guys just bought a 94 cherokee sport for a big 1500 whoo hooo no rust near perfect body and perfect interior only problem im having is it shifts from 2wd to 4 hi no problem but when i go to shift into 4 lo the shifter wont go back its like stuck at a brick wall when i first got the jeep it went into 4 lo but would pop out when i would put it into gear i checked the fluid it was low so i filled her up i also loosened the linkage to see if i could get it in by hand but still no luck plz help
#3
CF Veteran
Joined: Oct 2010
Posts: 2,150
Likes: 12
From: Ontario, Canada
Year: 1989 Laredo
Model: Cherokee
Engine: 4.0 L 6 Renix
Is the mechanical linkage underneath having a binding problem? Sometimes the pivot end bushing fails and falls out and the linkage can bind as it goes through it's arc.
Crawl under with a good light and check for play, lube never hurts.
Crawl under with a good light and check for play, lube never hurts.
#4
Thread Starter
Newbie
Joined: Feb 2011
Posts: 14
Likes: 0
From: eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.0
no it cant b that i took the linkage off and tried manualy putting it into 4 low and it will not even go into nuetral its like it doesnt exist lol but like i said it has gone into 4 low but just popped out so i put it back into 2wd and when i tried it again a week later and the prob i am having now acured
#5
Thread Starter
Newbie
Joined: Feb 2011
Posts: 14
Likes: 0
From: eugene, OR
Year: 1989
Model: Cherokee
Engine: 4.0
i dont think its going into 4wd at all cuz my turning radius doesnt change i can spin tires very easy in both 2 and 4wd but it is saying its in 4 hi but it doesnt feel like 4wd is working could the shift for be messed up
#6
CF Veteran
Joined: Oct 2010
Posts: 2,150
Likes: 12
From: Ontario, Canada
Year: 1989 Laredo
Model: Cherokee
Engine: 4.0 L 6 Renix
Not sounding good. You can get a manual and schematic by goolge search. I think an internal TCase surgery is in the future. Since it poped back out something is forcing the shift fork back internally. Get familiar with the schematic. Sorry but I don't believe a simple fix for this is available. Had to do an NP231 swap out for customers chev truck a few weeks back, that Tcase was dry as a bone and major internal melt down. Auto recyclers was $850 cdn for the replacement on that one.
How is yours for operations in 4wdHi?
How is yours for operations in 4wdHi?
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