Brake booster upgrade problem

[JasonB]

Just a word of advice for anyone doing the brake booster upgrade on your Comanche that has an automatic trans and column shift. If you do this mod and you go to crank your Jeep up and you get nothing start looking at adjusting the neutral safety switch. I found out the hard way. See while I was doing the upgrade I took the shifter cable loose to be able to access the two bottom nuts that hold the booster in place. So once I installed everything back to what I thought was correct my truck wouldn't start. I checked grounds, battery, and starter. So I got to thinking and thought just maybe it could be the NSS. So I shifted the trans underneath on the tranny itself to make sure it was all the way in the park position.i then tried to crank it and it fired right up. So just FYI if you have starting issues after doing the Cherokee brake booster upgrade on your ride please check to see if it's not your NSS needing adjustment.

[HOrnbrod]

Some questions since my shift cable is quite tight:

 

1. What year is your MJ?

2. How did you run your run your AW4 shift cable, over or under the booster?
3. Which booster mod did you do, the 95-96 XJ or the WJ?

[JasonB]

The year of my MJ is 88. Underneath the hood I ran the cable under the booster. What the issue was, was the connection under the dash where I disconnected it just enough to access the bottom nuts for the booster. Even after putting it back together as best as I could I could fully clip the cable retention clip back into its original place but oh well it works for now. Plus there's not a whole lot of room under the dash especially with the brake pedal in the way as I didn't feel like taking it back off. As for the booster I used...I'm really not sure which one it was due it coming with the truck as an extra part with the truck when I traded for it at the time.

[JasonB]

I meant couldn't fully clip it back into place. Sorry

[HOrnbrod]

Thanks Jason - appreciate the response.  :cheers:

[JasonB]

Anytime