Another Ignition Module Failure Thread - 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 > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Another Ignition Module Failure Thread

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line~Artec JK 1 TON SWAP~Advance Adapters SYE Kits

Reply
Unread 02-12-2013, 07:32 AM   #1
Renegad87
Registered User
1987 YJ Wrangler 
 
Join Date: Apr 2012
Location: Topton, PA
Posts: 93
Another Ignition Module Failure Thread

First off I've read almost every post I came across on this topic and haven't seen anyone with my experience so I'm starting a new thread.

4.2L
Nuttered
Weber
JuiceBox Ignition Upgrade

I burned up my first ignition module yesterday while "rescuing" my girlfriend's car from the woods she drove through. Icy roads and sharp turns don't mix.

All the upgrades listed above have been running for over 2 years with no complaints.

Jeep died while I was away from it and sat with ignition ON for a few minutes before I got back to it. Came back and it wouldn't start. I tried cranking for a few, but didn't get anywhere and then smelled the fatal electrical fire smell I'm sure we are all familiar with.

Opened the hood and let the wonderful smoke roll out. Ignition module was still cooking even with the key off. I had to disconnect the battery for it to stop.

So I replaced the module and it's been running fine. My question is did this just happen to fail that day or is something else wrong?

Renegad87 is offline   Reply With Quote Quick reply to this message
Unread 02-12-2013, 07:46 AM   #2
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,420
Try this:

http://www.squidoo.com/jeep-tfi-team-rush-upgrade

Avoid Burning Up Your Coil With A Ballast Resistor
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 02-12-2013, 10:07 AM   #3
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,082
If the ignition is left on (not running) with these ignition systems, they will burn up in less than a minute. Even a new module.
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote Quick reply to this message
Unread 02-12-2013, 06:15 PM   #4
Renegad87
Registered User
1987 YJ Wrangler 
 
Join Date: Apr 2012
Location: Topton, PA
Posts: 93
Old4x
I was wondering about that. I had always been told that leaving the ignition on without the engine is running was bad, but I never really understood it. So for now unless it happens again I will write this off as leaving the ignition on burned up my ignition module.

Que89yj
Excellent site I definitely bookmarked it. If I every have a coil problem I'll look into adding a resister and come to think of it I may run out this weekend and check the voltage at my coil.
Renegad87 is offline   Reply With Quote Quick reply to this message
Unread 02-12-2013, 08:49 PM   #5
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,082
Are you using a Duraspark style module?
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote Quick reply to this message
Unread 02-13-2013, 12:56 PM   #6
Renegad87
Registered User
1987 YJ Wrangler 
 
Join Date: Apr 2012
Location: Topton, PA
Posts: 93
I'm using one of these. I bought it at NAPA. I think it was labeled TP-40
ignition-module.jpg  
Renegad87 is offline   Reply With Quote Quick reply to this message
Unread 02-13-2013, 02:53 PM   #7
yellow2kgt
Registered User
1990 YJ Wrangler 
 
Join Date: Jun 2005
Location: Fishersville,Va
Posts: 1,009
Another thing to check, are you still using the factory resistance wire to power the coil? Running a full 12 volts to it could also end in premature icm failure.
__________________
1990 Jeep YJ 4.2
Howell EFI, BDS 3.5" lift, M.O.R.E 5/8" Boomerang shackles, 1" Daystar BL, 1" JKS MML, TFI, Crager soft 8s w 35" Dunlop Mud Rovers, Ford 8.8, 4.88s, Dana 30 E-Locker, Terra Flex SYE, Tom Woods CV shaft, Warn M8000.
yellow2kgt is offline   Reply With Quote Quick reply to this message
Unread 02-13-2013, 03:29 PM   #8
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,082
That is the duraspark style. Remember to turn ignition off when not running the engine. No radio playing when parked except in accessory position.

You can do the GM ICM mod if you keep having problems. Those ICMs are much better than the duraspark, and are internally regulated, they do not run an external resistor, that means hotter spark at idle. Only $25, most with a lifetime guarantee.
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote Quick reply to this message
Unread 02-13-2013, 06:22 PM   #9
Renegad87
Registered User
1987 YJ Wrangler 
 
Join Date: Apr 2012
Location: Topton, PA
Posts: 93
Old4x
Excellent thanks for the info. If this one burns up within the next year I'll go with a GM ICM mode. I already started looking at it. Jeep is getting rewired this summer so I may add it to the list.

Yellow2kgt
I performed the nutter bypass and ran new wire from the ignition module to the coil so I'm going to guess and say that I am not using the resistance wire originally used. I'll have to pull out the diagrams and figure out which one that is. I hate all these "fusible links" and "Resistance wires" this summer they are all getting replaced with modern components. Checking the coil voltage is at the top of my list once the snow stops falling.
Renegad87 is offline   Reply With Quote Quick reply to this message
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.
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.