Ignition control module - 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 > Ignition control module

ANOTHER Rockridge4wd Creation!! Spare Tire Carrier Delete The Original 3/8" Ruffstuff Diff Cover!Even Better Heim Pricing! From Ruffstuff

Reply
Unread 07-29-2010, 11:59 PM   #1
jeep108
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2009
Location: blanchard, Oklahoma
Posts: 621
Ignition control module

Think my icm is going south, starts, idles & runs for a little while, then stutters and dies. Won't start again till it cools down. I searched the forum and found several post about using an icm from an early 80's ford. My question is about the plugs, do I need to cut the plug off the old icm and splice it to the new one? Any thing else I should know? Thanks!

__________________
Find the[COLOR="Blue"]"YJ of the month"[/COLOR] contest in the stickies and participate!

Eph 6:13 -Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground,


[QUOTE=Opihi59;14523519]Welcome to the forum.
If you are a mechanical neophyte and have to repetitively intone the mantra of "lefty loosey," are a mouth breather and only own a hammer, it will be more of a challenge. [/QUOTE]
jeep108 is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 06:45 AM   #2
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,699
Look at the team rush and nuttering it. Get rid of the ICM and the vacuum stuff for the pollution controls all together.
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 08:05 AM   #3
jeep108
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2009
Location: blanchard, Oklahoma
Posts: 621
Sorry, thought i had updated my profile,(Its been fixed), Its been nuttered and rushed. I did the team rush mod about 2 weeks before the trouble began, I kind of wondered if maybe all the new ignition parts put too much strain on the old icm but I don't really know how all that works. I have gotten rid of the vac stuff except the dist advance and egr.
How do you go about cutting out the icm without going to an hei system?
__________________
Find the[COLOR="Blue"]"YJ of the month"[/COLOR] contest in the stickies and participate!

Eph 6:13 -Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground,


[QUOTE=Opihi59;14523519]Welcome to the forum.
If you are a mechanical neophyte and have to repetitively intone the mantra of "lefty loosey," are a mouth breather and only own a hammer, it will be more of a challenge. [/QUOTE]
jeep108 is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 08:10 AM   #4
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,152
Quote:
Originally Posted by Que89YJ View Post
Look at the team rush and nuttering it. Get rid of the ICM and the vacuum stuff for the pollution controls all together.
You have to keep the ICM, it is the ECM tht you can toss.
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 08:22 AM   #5
jbolty
Moderator
 
jbolty's Avatar
1990 YJ Wrangler 
 
Join Date: Jun 2007
Location: San Diego, CA
Posts: 16,068
Or, go with an HEI and toss everything else.
__________________
.
"The right to be heard does not necessarily include the right to be taken seriously." —Hubert Humphrey
.
If you live within wheeling distance of San Diego county, click here
jbolty is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 08:59 AM   #6
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,699
That is exactly it. Go to the HEI.

Last edited by Que89YJ; 07-30-2010 at 10:08 AM..
Que89YJ is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 03:00 PM   #7
greyarea
Registered User
1990 YJ Wrangler 
 
Join Date: Aug 2009
Location: gwinett, GA
Posts: 293
I parsonally would not go hei as you have a good system as is you just need a quality module (Motorcraft) you can use one for an 86 ford bronco with a 351 in it swap the connectors it will work perfect. I have one that I was about to put on ebay for $20 but it is a parts store brand one and run for about 5000 miles if you want it.
__________________
90 YJ Magnum 5.2 v8 , 1'' BL, 1'' booms, 4" Procomp, 35/12.50-15 MTR/kevlar Ford 8.8 4.10 lsd Aussie and TJ shafts up front.
KI4UTU
greyarea is offline   Reply With Quote Quick reply to this message
Unread 07-30-2010, 08:03 PM   #8
Old4X
Registered User
1990 CJ7 
 
Join Date: Nov 2008
Location: Ga
Posts: 5,152
The ground for your entire ignition system is under the cap on your distributor. Have you checked and tightened it? (it is the gold screw holding the wiring harness to the pickup in place).

Next, add a dedicated ground wire from the distributor to a known good ground to the battery.

These Jeeps are 20 years old or so, grounds do corrode and work loose.
__________________
418 miles on 19 gallons of gas. Can't beat the BBD !
Old4X is offline   Reply With Quote Quick reply to this message
Unread 07-31-2010, 01:28 AM   #9
jeep108
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2009
Location: blanchard, Oklahoma
Posts: 621
Thanks guys, yeah for now I would just assume stick with the system I've got since I just did the team rush & upgraded the coil.
Greyarea, I appreciate the offer but I think I've got a motorcraft here local that I can get pretty cheap.
Old4x, Thanks for the tip about the ground, never even thought about it but I'll add it as well
Thanks again
__________________
Find the[COLOR="Blue"]"YJ of the month"[/COLOR] contest in the stickies and participate!

Eph 6:13 -Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground,


[QUOTE=Opihi59;14523519]Welcome to the forum.
If you are a mechanical neophyte and have to repetitively intone the mantra of "lefty loosey," are a mouth breather and only own a hammer, it will be more of a challenge. [/QUOTE]
jeep108 is offline   Reply With Quote Quick reply to this message
Unread 08-05-2010, 09:57 PM   #10
jeep108
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2009
Location: blanchard, Oklahoma
Posts: 621
Put an old motorcraft icm on, the difference is amazing
__________________
Find the[COLOR="Blue"]"YJ of the month"[/COLOR] contest in the stickies and participate!

Eph 6:13 -Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground,


[QUOTE=Opihi59;14523519]Welcome to the forum.
If you are a mechanical neophyte and have to repetitively intone the mantra of "lefty loosey," are a mouth breather and only own a hammer, it will be more of a challenge. [/QUOTE]
jeep108 is offline   Reply With Quote Quick reply to this message
Unread 08-05-2010, 11:09 PM   #11
JPRatYJ
Registered User
1990 YJ Wrangler 
 
Join Date: May 2010
Location: Kennesaw Georgia
Posts: 218
i just got a brand new one with a lift time warrenty for 80 bucks now she starts like a dream EVERY TIME and i know im covered if it ever goes out again
__________________
/l ,[_____], 1990 YJ 4.2 Weber 34
l---L -[]lllllll[]- 4in Rustys, 3in body, 1.25 Shackles
()_) ()_)--o-)_) 33 Kumo's M/T and smittybilt tube fenders -----Johnny Rat-----
JPRatYJ is offline   Reply With Quote Quick reply to this message
Unread 08-09-2010, 04:56 PM   #12
jeep108
Registered User
1990 YJ Wrangler 
 
Join Date: Jul 2009
Location: blanchard, Oklahoma
Posts: 621
Yeah, new probably is the way to go I just wanted to know it'd make a difference before I spent any $$$$ & the old one was free, did you buy one made for a jeep or go with the one for the early 80's ford?
__________________
Find the[COLOR="Blue"]"YJ of the month"[/COLOR] contest in the stickies and participate!

Eph 6:13 -Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground,


[QUOTE=Opihi59;14523519]Welcome to the forum.
If you are a mechanical neophyte and have to repetitively intone the mantra of "lefty loosey," are a mouth breather and only own a hammer, it will be more of a challenge. [/QUOTE]
jeep108 is offline   Reply With Quote Quick reply to this message
Unread 08-09-2010, 06:21 PM   #13
JPRatYJ
Registered User
1990 YJ Wrangler 
 
Join Date: May 2010
Location: Kennesaw Georgia
Posts: 218
i went with one that was made for the jeep it was only 80 bucks with a lift time replacement....
__________________
/l ,[_____], 1990 YJ 4.2 Weber 34
l---L -[]lllllll[]- 4in Rustys, 3in body, 1.25 Shackles
()_) ()_)--o-)_) 33 Kumo's M/T and smittybilt tube fenders -----Johnny Rat-----
JPRatYJ 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


Suggested Threads





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.