nutter bypass help/ ICM Bypass - JeepForum.com

 
LinkBack Thread Tools
post #1 of 5 Old 04-09-2013, 03:02 PM Thread Starter
Fellows45
Registered User
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green
Posts: 262
nutter bypass help/ ICM Bypass

hey guys,

Quick question! its to my understanding that the nutter bypass, bypasses the ignition control module. I have an 89 2.5 tbi and i was just seeing if you could use the nutter bypass on it, or is it just for the 4.2...?

and if not, is there anyway to bypass the ICM on the 2.5, because this is the second one thats gone bad on me and im getting tired of dishing out a hundred bucks every few years..

thanks all!

Fellows45 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 04-09-2013, 04:10 PM
hdfxrs91
Registered User
1987 YJ Wrangler 
 
Join Date: Mar 2006
Location: FL
Posts: 690
Just for the 4.2 with carb.
hdfxrs91 is offline  
post #3 of 5 Old 04-09-2013, 04:38 PM Thread Starter
Fellows45
Registered User
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green
Posts: 262
Is there anyway to bypass the ICM in the 2.5?!

2002 Jeep WJ, 4.7, EBC Stage 4 brakes, Bilstein shocks (Still In progress)

1989 Wrangler YJ 2.5, 2 inch body lift, 33 inch tires
Fellows45 is offline  
post #4 of 5 Old 04-10-2013, 10:25 AM Thread Starter
Fellows45
Registered User
1989 YJ Wrangler 
 
Join Date: Mar 2013
Location: Bowling Green
Posts: 262
Bump for help!!!

2002 Jeep WJ, 4.7, EBC Stage 4 brakes, Bilstein shocks (Still In progress)

1989 Wrangler YJ 2.5, 2 inch body lift, 33 inch tires
Fellows45 is offline  
post #5 of 5 Old 04-10-2013, 11:21 AM
NonRubicon
Registered User
1990 YJ Wrangler 
 
Join Date: Nov 2009
Location: The southern armpit of California
Posts: 2,098
First some clarification - The Nutter Bypass takes the 4.2L computer (Engine Control Module) out of the loop. The computer partially controls the timing advance using knock sensor data.

Second - The ICM (Ignition Control Module) is responsible for sending the spark signal to the distributor. If you take it out of the loop, no more sparky.

If you don't want to try another factory style ICM, you can try an aftermarket style like what is offered by MSD.
NonRubicon is offline  
Reply

Tags
ignition , nutter bypass , start problems

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