1979 CJ5 Starts then dies (2) - JeepForum.com
LinkBack Thread Tools
post #1 of 4 Old 06-05-2014, 03:57 PM Thread Starter
Registered User
1979 CJ5 
Join Date: Jun 2014
Location: Redwood City
Posts: 1
1979 CJ5 Starts then dies (2)

So... I want to keep this short bc there are MANY similar threads on this subject, but every issue is slightly different. I went to replace the stereo in my CJ, the wiring was a mess from the PO. previous stereo was jumped directly into the fuse panel. stereo install was not successful, and afterwords the jeep would start, but die within a second despite throttle input.

Step 1: read archive internet forms
Step 2: replaced all fuses
Step 3:replaced ignition module with new
Step 4:

Today, I found out keeping the key in the "start" position will keep it running, dies immediately when returning to "run".

I'm thinking I may have shorted something in the ignition at the steering column?? Haven't checked the coil or the distributor, but from what I read, the start vs. run test narrows this down. Any input appreciated for a noob.

humboldt415 is offline  
Sponsored Links
post #2 of 4 Old 06-05-2014, 04:11 PM
Registered User
1985 CJ7 
Join Date: Jul 2010
Location: The Mojave Desert - Palmdale, Ca. U.S.A.
Posts: 6,787
Wiring issue or ign switch itself.
'Start' and 'run' are 2 different circuits.
Do this-Run a jumper wire from the POS(+)side of the battery to the POS(+) side of the coil. Start it-Does it keep run'n now(if it does-pull jumper to 'kill' engine)?
Don't run it to long, with a full 12VDC feed'n the coil--

Have'n you along, is like loose'n 2 good men
LumpyGrits is offline  
post #3 of 4 Old 06-06-2014, 06:23 AM
Mike Romain
Registered User
1986 CJ7 
Join Date: Nov 2007
Location: Off the Grid in Chester Grant
Posts: 18,083
Check the coil positive for volts when the key is in run. Should be 12 V there.

Under the dash on the side of the steering column not far from the ignition switch plug is a white plug on a red wire with white stripe. This is where a factory tach would hook up and is the main ign power line. Maybe you knocked that loose?

86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
Some Canadian Bush Jeep Runs and Build Photos:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
(10 new albums added Sept 16/10)
Mike Romain is offline  
post #4 of 4 Old 06-06-2014, 06:35 AM
Registered User
1981 CJ7 
Join Date: Jul 2009
Location: Bali
Posts: 5,836
Aounds like you have a bad ballast wire or resistor. However it could just be no power down the red with tracer wire in Run.

It is not fused, it is fed from the switch

BagusJeep lives in Bali.

1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
BagusJeep is offline  

Quick Reply

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome