No spark, tired of buying parts - JeepForum.com

Reply
 
LinkBack Thread Tools
post #1 of 28 Old 10-24-2013, 05:57 PM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
No spark, tired of buying parts

I have an 86 cj7. It has a weber carb, and a new motor(258). I have replaced the distributor, the distributor button, the ignition coil, and the ignition module.

A week and a half ago I got in my jeep and might not have let it warm up ad long as I should have. She made it around a mile before she shut off going down the road. Once she stopped, she would only turn over. I have tested for spark and have gotten nothing.

I started doing the nutter bypass, but stopped after splicing the wires because I started to reAd that it was for the original Carter carb. Thoughts on if this would work?

Also, since I have started fixing her, or throwing my money down the drain, I've noticed my radio won't turn on. That was until I was messing with my fuses and tested my lights. I realized that the rAdio now only works when the headlight dimmer is on.

The fuel pump is working. Anything else that will help with a diagnosis, please let me know.

I appreciate all the help.

Misterzingle is offline  
Sponsored Links
Advertisement
 
post #2 of 28 Old 10-24-2013, 06:30 PM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
Add a new ignition switch to that list
Misterzingle is offline  
post #3 of 28 Old 10-24-2013, 06:33 PM
seabass1858
Registered User
1983 CJ7 
 
Join Date: Jul 2013
Location: Hanover
Posts: 1,404
sounds like you got a short and you lost power to your ign control module (icm). first try testing for power going into the icm with the ign key on. http://www.jeep-cj.com/forums/f2/ign...l-issues-8109/, http://www.jeepforum.com/forum/f8/86...-spark-936569/ (post 8) heres a good dianostic advice


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
seabass1858 is offline  
post #4 of 28 Old 10-24-2013, 07:32 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,476
Also check your grounds.

There should be a fat wire going to the engine block and a smaller one coming out of the battery clamp and going to the firewall within 6 inches of the negative terminal.
86cj74.2L is offline  
post #5 of 28 Old 10-24-2013, 07:38 PM
ronppger
Registered User
 
Join Date: Jul 2013
Posts: 1
Sounds like a classic loss of ground problem. Mine died at a red light and I threw new parts at it and finally found the ground on engine block fro battery appeared to be tight, I removed and cleaned and scratched it up and tightened it to finally fix the problem.
ronppger is offline  
post #6 of 28 Old 10-24-2013, 08:26 PM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
I did the test and got to step 8 where I was told the problem was indeed a ground, or at least that's where it's leading me. You mentioned some wires to check, you wouldn't have a better description or perhaps some pictures?

I'm going to keep working on it tomorrow.
Misterzingle is offline  
post #7 of 28 Old 10-24-2013, 09:21 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,476
Quote:
Originally Posted by Misterzingle
I did the test and got to step 8 where I was told the problem was indeed a ground, or at least that's where it's leading me. You mentioned some wires to check, you wouldn't have a better description or perhaps some pictures? I'm going to keep working on it tomorrow.
The negative terminal of your battery should have two wires coming from it. One goes to the engine block and one gets attached to the firewall within a few inches of the battery negative terminal.
86cj74.2L is offline  
post #8 of 28 Old 10-25-2013, 04:39 AM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
There is the big wire and one open ended wire coming off of the negative battery terminal.
Misterzingle is offline  
post #9 of 28 Old 10-25-2013, 07:17 AM
seabass1858
Registered User
1983 CJ7 
 
Join Date: Jul 2013
Location: Hanover
Posts: 1,404
should go to firewall i believe


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
seabass1858 is offline  
post #10 of 28 Old 10-25-2013, 07:47 AM
shadoow
Senior Member
1985 CJ7 
 
Join Date: Nov 2006
Location: Fort Worth
Posts: 629
it's important that not only the ground wires are there but they have good contact including the connection to the battery itself. Undo the ground connections at the battery, engine, elsewhere, etc. and make sure the wire terminals are clean, the connection points are clean then re-attach and make sure they are nice and tight. It's hard to tell if a connection is good just by looking at it so this is something you can do that won't cost you any $$
shadoow is offline  
post #11 of 28 Old 10-25-2013, 12:43 PM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
When I was following the diagnostics test, it said that the negative on the coil wasn't grounded. Is there away to test that? I am thinking that a wire from the negative terminal of the battery to the negative on the coil will work?
Misterzingle is offline  
post #12 of 28 Old 10-25-2013, 01:35 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,476
Here
Attached Images
 
86cj74.2L is offline  
post #13 of 28 Old 10-25-2013, 03:05 PM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
Name:  image-282126520.jpg
Views: 123
Size:  463.3 KB

I have this wire that doesn't seem to have a connection
Misterzingle is offline  
post #14 of 28 Old 10-25-2013, 03:12 PM Thread Starter
Misterzingle
Registered User
1986 CJ7 
 
Join Date: Nov 2012
Location: Garner
Posts: 111
Does the ignition module need to be mounted for the ground?
Misterzingle is offline  
post #15 of 28 Old 10-25-2013, 03:59 PM
86cj74.2L
Web Wheeler
 
86cj74.2L's Avatar
2004 WJ 
 
Join Date: Jul 2006
Location: Stouchsburg, PA
Posts: 10,476
Quote:
Originally Posted by Misterzingle
I have this wire that doesn't seem to have a connection
that black wire with the yellow butt splice goes to the screw above the wire harness doing nothing in your picture. It's the exact same screw my body ground is attached too.
86cj74.2L is offline  
Reply

Quick Reply
Message:
Options

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

Password:


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



Email Address:
OR

Log-in









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