Neutral Saftey switch symtoms?

What are some symptoms of the NSS going out?

All of a sudden my Jeep just decides to cut out all of a sudden. Driving along the highway at 60 the jeep just bogged off and on in a split second. Then today I was just sitting at a stop light and it was idling very well and it just died all of a sudden, and i started it right back up and it idled and ran fine till it bogged quickly a ways down the road. Then the rest of the day it ran great. This leads me to believe it is an electrical problem.

Also for a couple months now when I first start the jeep and put it in drive it will intermittently take off like it should and the rpms will dive down for a second and just return to where they should be. :dunno:

Any ideas?

The NSS only prevents you from starting the truck in gear.

Does it sound more like the CPS sensor?

Yes, I'd agree..Crank Position Sensor (CKS)...possibly TPS (Throttle Position Sensor). My '89 had a hesitation problem on starting from a stop...turned out to be TPS. I've got 270k on it...never replaced the CKS, but know I'm gonna have to soon.

Mosephus said:

Does it sound more like the CPS sensor?

Click to expand...

My old '92 did the same thing as yours is doing now, I replaced the crank position sensor and no more problems.

Hallo. You can start to check the connector of the CPS.
It is right , the NSS is only for shift info to the ECU (overdrive), the backup lights and to give a ground path by the starterrelay and ignition switch for starting only in N and P.


'92 XJ

p.s. 88pioneer a '92 XJ is not old only used.

Thanks guys.