NP242 troubles

[XgeekstarX]

i was in 4LO for about 3 seconds the other day going over some roots in my front yard. afterwards i put it in neutral, shifted back into 2wd, then parked it.

later on i went to go to the store and i heard this crazy whining noise. i look over and my part time 4x4 light is flickering on and off really fast. i'd go to turn a corner and it feels like it's trying to slip out but isn't. i checked the TC fluid and it was full and looked fine.

i tried putting it in reverse after going back into 2wd. i've tried almost every way i've heard of to disengage the 4wd. the only way i can get it to disengage is to go to the lake at the end of my street and hit a nice sized bump.

92 xj
4.0L HO
auto
NP242

 

[buffalomatt350]

Try getting underneath it and manually shifting it into 2WD. There's a little lever on the side there, just put a 9/16 wrench on the nut to turn it. Check for loose shift linkage.

 

[Mercenary]

This might sound a bit silly, but check the air pressure in your tires. I was having the exact same problem you are describing with my 92. One of my front tires had a slow leak in it and whenever the air pressure difference between tires was too large, the thing was a beast to shift from 4lo to 4hi. I bought 4 brand new tires and presto, the problem disappeared.

 

[kkerem]

It might be a vacuum leak. Try to change heater/ A/C positios