91' rough and low RPM Idle...HELP - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ 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 05-26-2013, 11:18 PM   #1
Jeeper
 
anklenawer's Avatar
 
Join Date: Dec 2009
Location: Virginia Beach -
Posts: 101
Thumbs down 91' rough and low RPM Idle...HELP

alright boys, here we go.

I havne't noticed this creeping up or anything - just happened today while on the highway for a while - came into town and hit a stop sign... then she was idling at about 400 rpms - almost stalled out - a few times while in park it actually did stall out.

heres what i have noticed

-pretty good humming coming from the gas tank ( fuel pump )

- when i press the brake pedel a few times - it idles almost normal ( vacume leak)

- gave it new plugs/wires/cap/rotor - sea foam throttle body and even got a new TPS

- used carb cleaner around vacuums lines - couldn't find any problems.

- there was a screw plugging one vacuum line, ( been there forever) took it out and it will idle about about 400 but not shaking and stalling..



there is all i got for you gurus out there - help me out and lets see if we can't narrow this down.

Happy Memorial Day.!

anklenawer is offline   Quote
Old 05-27-2013, 08:10 AM   #2
Jeeper
 
anklenawer's Avatar
 
Join Date: Dec 2009
Location: Virginia Beach -
Posts: 101
anything guys?

anklenawer is offline   Quote
Old 05-27-2013, 08:20 AM   #3
Jeeper
 
RednekYJ's Avatar
 
Join Date: Feb 2007
Location: LITH IL
Posts: 1,496
Where's the plugged line supposed to connect? Is that port also plugged? Egr valve maybe???
RednekYJ is offline   Quote
Old 05-27-2013, 09:10 AM   #4
Newb
 
Join Date: Dec 2010
Location: SF Bay Area
Posts: 10
Had similar signs a couple years back. Did code check and it turned out to be (VSS). Solved problem. Real easy fix. I did have to replace fuel sending unit the next year.
BillMichaels is offline   Quote
Old 05-27-2013, 12:00 PM   #5
Jeeper
 
anklenawer's Avatar
 
Join Date: Dec 2009
Location: Virginia Beach -
Posts: 101
Solved

after complete tune up - fuel filter was the culprit



thanks for the responses guys -

also - i think the valve to the egr valve is the one plugged up..


thanks again
anklenawer is offline   Quote
Reply

Tags
idle , rough idle

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 06:05 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