ECU problem? Help!!! - Jeep Wrangler Forum
Jeep Wrangler Forum

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

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-29-2012, 09:05 AM   #1
Newb
 
Keepthejeep's Avatar
 
Join Date: Nov 2012
Posts: 6
ECU problem? Help!!!

It's a 97 wrangler 2.5 mt.
By cold engine start after few minutes the rpm goes up and down close to engine stop and the air intakes sucks more air and getting loud. When I step on the gas pedal in this condition it sounds like air explosion or sounds like old tractor. After few minutes later when the engine gets warm it goes to normal. Since I disconnect the sensor plug or the ECU connection it is much better now but it still happens sometimes, not so worse though.
Even Chrysler service center couldn't find the problem.
Is this a computer problem? If yes, why do I have still the problem after disconnection? Can I solve this problem with a new ECU? Any suggestion?

Keepthejeep is offline   Quote
Old 11-29-2012, 12:36 PM   #2
Jeeper
 
obidya's Avatar
 
Join Date: Sep 2011
Location: Fort Wayne, Indiana
Posts: 1,527
Check the IAC Valve, you can use throttle body cleaner to clean it off and make sure its not obviously broken. It could be dirty or getting stuck fluctuating the amount of air coming through the throttle body. One of the ideas behind the IAC is to open it up when its cold and restrict it a bit more as it gets warmer.

__________________
Black 97 Sahara 4.0L 5 Speed - Fully Cloak'd
1.75" BL with 35"x12.5" Wrangler MTR w/ Kevlar 10k Engo winch
obidya is offline   Quote
Old 12-02-2012, 08:07 PM   #3
Newb
 
Keepthejeep's Avatar
 
Join Date: Nov 2012
Posts: 6
Quote:
Originally Posted by obidya
Check the IAC Valve, you can use throttle body cleaner to clean it off and make sure its not obviously broken. It could be dirty or getting stuck fluctuating the amount of air coming through the throttle body. One of the ideas behind the IAC is to open it up when its cold and restrict it a bit more as it gets warmer.


Click image for larger version

Name:	image-3984421644.jpg
Views:	41
Size:	137.9 KB
ID:	183917

Thank you very much! It was very simple and quick work. The result is great, never thought this might be the problem.
Thanks again, you saved my Jeep.
Keepthejeep is offline   Quote
Old 12-02-2012, 08:45 PM   #4
Jeeper
 
obidya's Avatar
 
Join Date: Sep 2011
Location: Fort Wayne, Indiana
Posts: 1,527
WOW you really cleaned that up!
glad that helped, also HEY welcome to wrangler forum.
__________________
Black 97 Sahara 4.0L 5 Speed - Fully Cloak'd
1.75" BL with 35"x12.5" Wrangler MTR w/ Kevlar 10k Engo winch
obidya is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not 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 01:32 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

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