Will only start when I connect the prongs on the starter

Tiny
GREENCUMULON
  • MEMBER
  • 1998 JEEP CHEROKEE
  • 4.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
My key turns and the dome lights and radio come on, but it won't turn over the engine. I can crawl under the vehicle and start it by connecting the prongs on the starter. So I'm assuming it has to do with the ignition? Any help would be fantastic.
Wednesday, September 30th, 2020 AT 6:15 AM

3 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

The first thing I suggest checking is the starter motor relay. It's located in the power distribution module under hood. Here is a tutorial showing how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I've attached pictures below of the relay location and circled the relay in red for your vehicle. Hope this helps and let us know what you find and we'll go from there. Thanks for using 2CarPros.
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Wednesday, September 30th, 2020 AT 12:29 PM
Tiny
GREENCUMULON
  • MEMBER
  • 2 POSTS
So I checked all of the relays and replace the NSS, but it's still not starting without me manually connecting the starters prongs together. Same as before, dome lights, radio, A/C, etc. Still works when I put the key into the on positions, but the engine wont turn over unless I crawl under the car and jumpstart the starter. Could it be the ignition or do I just need to replace the starter?
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Friday, October 2nd, 2020 AT 6:34 AM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello again.

I think you might be having an issue with the starter solenoid. If you remove the starter motor most auto parts stores will test for free. Here are tutorials showing what is involved:

https://www.2carpros.com/articles/how-a-starter-and-solenoid-works

https://www.2carpros.com/articles/starter-not-working-repair

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

I've attached picture removal steps below for starter removal. Hope this helps and keep us updated. Thanks again for using 2CarPros.

Danny-
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Friday, October 2nd, 2020 AT 9:05 PM

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