Jeep YJ spitting and sputtering, Loss of power - JeepForum.com
Search  
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 JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Jeep YJ spitting and sputtering, Loss of power

Bead Lock Wheels! Raceline, Trail Ready, & Trail-GearXHD Heavy-Duty Hood Latches for JK and TJ available at OcoSYE Kits from CCOR! 706-207-4140

Reply
Unread 12-27-2013, 06:40 PM   #1
Rapterlined
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2013
Location: Burlington, NORTH CAROLINA
Posts: 43
Jeep YJ spitting and sputtering, Loss of power

okay first off let me say thanks to anyone who can help. also i know there is a search bar but i couldn't find one exactly what i needed. so my jeep has the inline 6 and 117,000 miles on it. For some reason it hardly EVER stars on the first turn. But also it seems to spit and sputter and loose power around 10 minutes after driving it. sometimes it will buck but its odd and very annoying. Ive already replaced the MAP sensor, plugs, wires, fuel filter, Fuel pressure regulater, and the ignition coil, crank shaft position, distributor cap. im running out of ideas so any help would be much appreciated. Thanks in advance

Rapterlined is offline   Reply With Quote Quick reply to this message
Unread 12-27-2013, 07:27 PM   #2
pete1991YJ
Registered User
1991 YJ Wrangler 
 
Join Date: Mar 2012
Location: Niagara Falls, NY
Posts: 1,629
I'm betting the O2 sensor. You may have replaced everything *but* the one part that actually needed it. Have you checked for error codes?

The big clue is that it only does it after running for a while -- the computer does not read the O2 sensor until its up to 185 degrees at the thermostat. If it starts reading the O2 sensor at this temperature, and gets a weird reading, it goes into a default mode.
__________________
***--- Wrecking Crew member ---***
"I've prolly been around longer than you think"
pete1991YJ is offline   Reply With Quote Quick reply to this message
Unread 12-29-2013, 07:54 PM   #3
89yjislanderr
Registered User
1989 YJ Wrangler 
 
Join Date: May 2013
Location: columbia, sc
Posts: 113
one thing my jeep did was a distributor wire was sometimes contacting some other wire/metal pieces and shorting. but it would only occur while driving and if a bump hit it the right way and such, causing it to buck and jerk. it may be something as simple as that
89yjislanderr is offline   Reply With Quote Quick reply to this message
Unread 12-31-2013, 02:18 PM   #4
meangreeny
Registered User
1992 YJ Wrangler 
 
Join Date: Dec 2009
Location: PORT ALBERNI, BRITISH COLUMBIA
Posts: 88
sounds like a throttle position sensor to me
meangreeny is offline   Reply With Quote Quick reply to this message
Unread 03-14-2014, 07:40 AM   #5
Rapterlined
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2013
Location: Burlington, NORTH CAROLINA
Posts: 43
Replaced the throttle position and o2 sensor, I also replaced the fuel pump and still still not running right
Rapterlined is offline   Reply With Quote Quick reply to this message
Unread 03-14-2014, 07:53 AM   #6
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 15,471
You were about right with the O2 sensor. Check your manifold for loose/missing bolts, especially on the rear of the exhaust manifold near the firewall. Check the exhaust manifold for cracks, especially around the collector tubes.
Que89YJ is online now   Reply With Quote Quick reply to this message
Unread 04-09-2014, 10:52 AM   #7
Rapterlined
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2013
Location: Burlington, NORTH CAROLINA
Posts: 43
I finally said screw it, I took it to a shop on Monday no info yet!
Rapterlined is offline   Reply With Quote Quick reply to this message
Reply

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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

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.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.