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Unread 10-16-2013, 06:05 PM   #1
jikarner
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HELP! Engine suddenly won't turn when key is turned.

My wife and I traded cars for a 95 Cherokee, and found that the cig lighter didn't work and wouldn't charge accessories. I checked the fuses, and they're all good. The existing lighter assembly looked pretty corroded, so I bought a replacement. When I took the old one out, only one wire (black/white) was connected. After unsuccessfully searching the Internet, I tried the only loose wire behind the panel that would fit anywhere on the back of the lighter (purple/white). Now the Jeep won't start. Help!

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Unread 10-16-2013, 06:10 PM   #2
psychoteen101
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Check your main fuses again. You might have accidently shorted a wire and popped a fuse. Does it turn over? Do any of your interior or exterior lights work?
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Unread 10-16-2013, 07:03 PM   #3
jikarner
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Quote:
Originally Posted by psychoteen101
Check your main fuses again. You might have accidently shorted a wire and popped a fuse. Does it turn over? Do any of your interior or exterior lights work?
Everything else seems normal. Have triple-checked the fuses, and even swapped out the ignition relay. It does not turn over. Checked wiring diagram, and I connected the correct wires for the cig lighter. All lights and radio work.
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Unread 10-16-2013, 07:31 PM   #4
chris87xj
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Try starting it in neutral.
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Unread 10-16-2013, 07:55 PM   #5
jikarner
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Quote:
Originally Posted by chris87xj
Try starting it in neutral.
Tried that too. It had an existing issue with that (sometimes wouldn't start in P, would start in N).
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Unread 10-16-2013, 08:10 PM   #6
chris87xj
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Sounds like the Neutral Safety Switch was on its last leg and finally died. Your recent electrical work may not be related to the no-start issue.
Here's a good write-up on rebuilding one if you can get it off without breaking its plastic housing. NSS rebuild

If you can get to its connector behind the dipstick, you can put a jumper in as shown below for testing and verification of it not working. This isn't a good workaround fix though because the jeep can start in gear and won't have backup lights without a working NSS.

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Unread 10-16-2013, 10:47 PM   #7
jikarner
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Quote:
Originally Posted by chris87xj
Sounds like the Neutral Safety Switch was on its last leg and finally died. Your recent electrical work may not be related to the no-start issue.
Here's a good write-up on rebuilding one if you can get it off without breaking its plastic housing. NSS rebuild

If you can get to its connector behind the dipstick, you can put a jumper in as shown below for testing and verification of it not working. This isn't a good workaround fix though because the jeep can start in gear and won't have backup lights without a working NSS.
I looked at the NSS Rebuild tutorial. Thanks a lot. I think I'll give it a shot.

Hopefully, it was just weird, coincidental timing and not a weird short. I also had the Jeep jacked up to put in a catalytic converter today. Do you think it coming down hard could have done the NSS in?
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Unread 10-16-2013, 11:17 PM   #8
jikarner
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I'm looking online at NSS's, and am seeing two different parts. There is the larger assembly that bolts to the underside of the transmission, and a small, three-pronged plug/connector. What's the deal?
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Unread 10-17-2013, 10:55 AM   #9
chris87xj
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The switch mounts on the side of the transmission and the electrical connector joins it to the vehicle electrical systems.
Quadratec NSS or Ebay NSS
You'll find the connection point somewhere down behind the dipstick back along the firewall.
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Unread 10-18-2013, 02:12 PM   #10
jikarner
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Quote:
Originally Posted by chris87xj
The switch mounts on the side of the transmission and the electrical connector joins it to the vehicle electrical systems.
Quadratec NSS or Ebay NSS
You'll find the connection point somewhere down behind the dipstick back along the firewall.
Yeah, sorry. That last post was vague. I was wondering what the difference was between the two types of NSS's. The big, expensive one is for four speed transmissions, like what's pictured in the tutorial.

I just finished rebuilding my NSS following the same steps carefully, and still no start/click. Any other suggestions?
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Unread 10-18-2013, 04:35 PM   #11
jikarner
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Quote:
Originally Posted by chris87xj
Sounds like the Neutral Safety Switch was on its last leg and finally died. Your recent electrical work may not be related to the no-start issue.
Here's a good write-up on rebuilding one if you can get it off without breaking its plastic housing. NSS rebuild

If you can get to its connector behind the dipstick, you can put a jumper in as shown below for testing and verification of it not working. This isn't a good workaround fix though because the jeep can start in gear and won't have backup lights without a working NSS.
Ok. I tried the rebuild, and nothing. Could you explain the verification technique using a jumper? Do I just stick a wire in the slots and try starting the Jeep?
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Unread 10-22-2013, 12:56 PM   #12
jikarner
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UPDATE! After rebuilding the NSS and replacing the starter relay and ignition switch, I took it to a shop. The discovered that there is an alarm system installed in the Jeep screwing everything up. $200 to remove it and rewire everything. SUPER!
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