ECU/PCM/PCU/Voltage regulator 97 tj question? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 06-19-2012, 03:43 PM   #1
Join Date: Aug 2011
Location: az and wa
Posts: 18
ECU/PCM/PCU/Voltage regulator 97 tj question?

Alright I want to try and swap my broken ecu/voltage regulator for a buddies real quick just to see if thats whats wrong with my jeep. I have a 97 tj 4cyl and he has a 4.0l sport 97 tj. The Ecu's are connected the same and look identical. Can I put it in my jeep to see if thats the problem without ruining his component or will it ruin the computer by putting it in a dif jeep. Dealerships dont seem to care or give a rats butt about people that didnt buy jeeps from them or they dont have 97 tj parts (is what they told me.) The part is not expensive about 250$ but I am worried thats not the problem and if that part touches my jeep I can not take it back (dont know how they know but whatever.) However I am sure that replacing the ecu will give me about a 90% chance that my tj will run again. I have replaced the battery, alt, cables and the jeep runs fine (and starts fine), but the battery will not hold a charge. So sorry for long intro but main question is can I put his computer in my jeep and start it to see if thats the problem or will it short circuit? Thank you!

jeepwrangler97 is offline   Quote Quick Reply
Old 06-19-2012, 03:53 PM   #2
Plowboy1970's Avatar
Join Date: Nov 2010
Location: Burlington WI
Posts: 1,187

Plowboy1970 is offline   Quote Quick Reply
Old 02-17-2013, 02:38 AM   #3
Join Date: Aug 2011
Location: az and wa
Posts: 18
I don't know what kind of no that is. No! it's a problem or no it's not. Anyone that comes across this thread, no its not a good idea. Each PCM is programmed with each jeep.
jeepwrangler97 is offline   Quote Quick Reply
Old 02-17-2013, 11:40 AM   #4
Knows a couple things...

WF Supporting Member
Jerry Bransford's Avatar
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 32,281
Images: 2
No because it won't work. Your ECM is programmed for a 4-banger his is programmed for the 4.0L engine.
Remember that having a different opinion doesn't also require one to be a jerk when expressing it.

When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply

computer , ecu , pcm , pcu , voltage regulator

Quick Reply

Register Now

In order to be able to post messages on the Jeep Wrangler Forum 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 email 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

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 Off
Refbacks are Off

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 06:44 AM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC