Just curious...my 90 xj with the np242...is there a dummy light to indicate when the t-case
Is in 4lo????....it idicates part time and full tme fine...and when those are lit up the t-case is in the indicated range...when I go to N...no light on dash...when I go to 4lo it idicates on the dash that I'm in part time?...but I know its in 4lo...is there a N and 4lo dummy light that should come on?...I took out the t-case range switch and cleaned it...no change...I'm only askn this because my tranny won't shift on its own and I've changed the tcm and tps with another that I know works and still won't shift...and I'm aware the t-case range sensor goes through the nss...wondering if the range sensor is causing the no shift issue before i move on to the nss...any help would be greatly appreciated!...by the way the jeep shifted fine befor...I drove it one day...parked it...went out the next day to drive it and bam...no shifting...just quit outa nowhere!

 

I'm not sure if this helps but my 87 does not have a 4low light.

 

^x2 My 93 has the 231 tcase but in 4lo all I get is the Part time light.

 

I dont see a bulb in the instrument panel electrical diagram.

 

What does the ol 87 do when u shift between settings?

 

Just talked to my neighbor who has a 91 withe the 231 and he went through the ranges and in 4lo it indicated partime...soooo....maybe the nss is causing this...need more input though!

 

Thats, what happens in mine too. there is no "4low" dummy light. It lights up the "part time" in the dash.

 

I think mine just says "4WD" in green on the left side of the dash where the rest of the idiot lights are.

Then again I've yet to really play with it on the regular, so I could be wrong. I do know for sure when in 4 it'll put up the green 4WD.

 

what gears do you, or do you not have?

 

Pretty sure 355s...does anyone think my nss is causing this no shift issue?

 

Anyone?

 

Sorry no when you put it in drive do you have 1 and 2 or just 1 and od?

 

NSS? Do you have back-up light when you put it in R, and will the jeep start in P and N.

 

Stays in first...won't shif out...if I unplug the tcm I can manually shift...yes have reverse lights and will start in p and n no problem...never has a prob starting...so wtf is the deal!

 

by tcm you mean trans control module id replace it