4.2 coil issue - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > 4.2 coil issue

Rampage Bowless Soft Top Oconee offroadAlloy USA Still AvailableAdvance Adapters SYE Kits

Reply
Unread 05-11-2013, 08:07 PM   #1
bigtom89
Registered User
1988 YJ Wrangler 
 
Join Date: Dec 2012
Location: fort myers, florida
Posts: 20
4.2 coil issue

I have a 88 YJ with a 4.2.

Here's what went wrong and how it happened. Driving down a newly paved section of a main road I hit a half paved manhole cover. I hit it so hard that the jeep jumped off to the side of the road. The radio died along with the Jeep itself. Once I pulled over and came to a stop there was smoke pouring out of the front of the Jeep. I hit so hard it messed up wiring, melted fuse able links and other wires.

I now have the Jeep so it will turn over but it won't fire, no spark. Is there a way to direct run the coil to a power source? I've done a few quick searches and really haven't found anything. Thanks for any help or advise.

__________________
1988 Wrangler YJ, 4"lift on 33" BFG Mud Terrians
bigtom89 is offline   Reply With Quote Quick reply to this message
Unread 05-11-2013, 10:57 PM   #2
NonRubicon
Registered User
1990 YJ Wrangler 
 
Join Date: Nov 2009
Location: The southern armpit of California
Posts: 2,097
The coil get's the spark signal from the ignition control module. I'd start investigating there.
NonRubicon is offline   Reply With Quote Quick reply to this message
Unread 05-12-2013, 04:38 PM   #3
bigtom89
Registered User
1988 YJ Wrangler 
 
Join Date: Dec 2012
Location: fort myers, florida
Posts: 20
The ICM tested good, I should have also mentioned that I preformed the Nutter bypass so I've gotten rid of a lot of the computer control for the ECM. No problems until I hit the exposed man hole. Fuses look good under dash but is there anything else I should be looking for? My guess is no power from under dash to ICM.
__________________
1988 Wrangler YJ, 4"lift on 33" BFG Mud Terrians
bigtom89 is offline   Reply With Quote Quick reply to this message
Reply

Tags
4.2 , coil , ignition , YJ

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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

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.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.