98 XJ 4.0

Does bypassing the NSS cause the check engine light to come on?

 

Why are you bypassing the NSS in the first place?

And yes, I'm pretty sure it does.

 

Why would you want to? Mine crapped out last week and I took it apart and cleaned it. One of the springs was gummed up inside it, sprayed out with brake clean and wiped some dielectric grease inside. Took 2 hours and it like new again.

Sorry if your looking to do this for some other reason.. Just thought I'd share

 

If all you want is to start the truck just ground the black and white wire on the connector.No you won't get a CEL.

 

Thanks for the fast response. I am having issues with the jeep not starting because of it. I attempted to remove it to clean it last year but could not get it off to save my life. I do all of my own repairs and am handy, but this thing was a *****. As the weather got warm the problem went away. Now that it is getting cold again, I am getting problems. I was thinking of just bypassing it for now.

 

http://www.bc4x4.com/tech/2010/jeep-...ty-switch-nss/

Follow this write up if you didn't before. Good luck

 

Thanks for that. I used a similar write up last year and this is what happened. (post from last year)

I got everything loose, I just could get it pried off. The nut I was using to pry with against the pan started to run up the threads and the pan starting to bend slightly. I just would not budge.

 

I had the similar problem, but my NSS didn't give me the non-starting trouble, I just can start in any gear i want.

But yeah, I was trying to fix this, and found a good NSS in a junkyard. Got every thing off except the NSS. It's just so damn hard to pry out.

In the end, I lost my patience and the screw driver damaged the plastic cover at the back of the NSS. But it did come off, so be careful not prying to hard.

somebody on the forum said they got to pull it off by hand, it's magical to me, how they didi that.

 

Mine was stupid hard to get off. The NSS slides onto a shaft that goes into the tranny. The shaft is exposed to all elements(rain,salt,snow) it all get flung up under and corrodes the shaft. What I did was spray the NSS with PB blaster and let it soak. It took some work to get it off, pushing,pulling,spraying,prying gently... But it finally popped off. After refurbishing the NSS I applied some grease to the shaft after cleaning it up. She slide right on no problem.

I think the hardest part of the job was removing those stupid zip ties up along the fire wall. What a pain haha

 

Yeah it does make the CE light come on, I had the same problem for the longest time. All i did was go to junk yard and pull one off a wrecked xj and swapped it onto mine. They are for sure a pain in the *****. Only cost like $10 though