2.5 Starter Problem

[dasbulliwagen]

Getting my MJ back together after putting the AX5 4wd trans in. I got the exhaust back in and the starter. The starter won't turn over. I checked power to the starter, good, starter is grounding good as you can jump the positive lug to the other large lug for the motor and it will spin, but trying to jump the pos lug to the solenoid connector does nothing, but if you take the starter out, and hook it all up on the bench with a jump box, and a starter bump switch, it all works properly. The starter bump switch has a light on it to tell you if it is hooked up and seeing continuty through the solenoid or starter motor, and it lights while on the bench but not in the truck, so I added another ground wire directly from the starter body to the battery, no change. the solenoid won't work while in the vehicle. Do I just need another starter? This thing has me pulling my hair out!

[88whitemanche]

Did you check the wire leading to that lug?

[dasbulliwagen]

Ive checked everything, the wire from the relay to the starter solenoid, the relay is working. it is acting like the solenoid is not getting ground through the starter body while installed in the truck, On the bench with the neg of the jump box attached to the starter body, the pos attached to pos lug, and the button attache to pos lug and solenoid connector, it all works properly, but won't do this in the truck, even with another added ground wire.

[JeepcoMJ]

Did you rip the ground strap on the motor while it was tilted when trans was removed?

 

 

Also, even if the relay isOK, make sure it's actually sending power out and not grounding it.

[dasbulliwagen]

It was sending power out and it was reaching the starter. The ground strap was OK. I even added another ground. It didn't help. I had a new starter sent over and installed it.... it fired right up. Something was causing the solenoid on the starter to loose ground when it was torqued down. Thanks for the suggestions and speedy responses.