Prestolite ot Motorcraft Ignition -
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 > General Technical Discussions > Engines & Drivetrain > Prestolite ot Motorcraft Ignition

Ruffstuff 10 year saleBDS 4-1/2" Suspension Lift Kit - Jeep Wrangler YJRough Country Lift Kits and Parts!

Unread 08-03-2002, 12:44 PM   #1
Registered User
1977 CJ7 
Join Date: Mar 2002
Location: Blue Springs, MO
Posts: 15
Prestolite ot Motorcraft Ignition

Also posted this in the CJ forum, just covering all bases. Thanks for any help.

Ok, Here is the deal. Did not have any spark coming off of the coil. Found out that the ECM (electronic control module) was bad, replaced it and the engine ran very rough. Replaced the coil and the engine smoothed out. After running for about 3 months the engine started to run rough again and then low and behold it failed to start. Once again no spark coming off of the coil. Main question is would it be worth it to change from the prestolite to the motorcraft ignition system? And if so how much trouble would this be? Maybe Jeep only made this style for 2 years for a reason? If any could let me know that would be great. The price difference is also a factor since the prestolite is more expensive to keep replacing parts. Or if anyone has an idea as to what is causing the ECM to go bad that would help also.

"In the End Everything is a Gag...." Charlie Chaplin
mrjoshuaw is offline   Reply With Quote Quick reply to this message
Unread 08-08-2002, 11:53 AM   #2
Registered User
Join Date: Mar 2002
Location: Southern Rhode Island
Posts: 1,527
You can switch to Motorcraft or even go HEI Conversion, which is much easier and better.

Prestolite is/can be pretty crappy sometimes, and very troublesome, in my past experiences.
4wheeler4CJ is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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. is not in any way associated with Jeep or the Chrysler Corp.