Extreme Terrain
4x4Wire Trail Talk Forums: Jeep, Toyota, Mitsubishi, Pajero, Isuzu, Kia, 4WD, 4x4, SUV, Off-Road and OutdoorWire Forums


Search 4x4Wire
Search E-Bay for your parts:
Search Amazon for your parts:

Recent Posts on TrailTalk
New here
by rxinhed. 05/25/17 01:54 AM
1999 Trooper 4x4
by MBrannon. 05/25/17 01:16 AM
SB 249 Coalition Letter to Key Legislators
by 4x4Wire. 05/24/17 04:37 PM
Maxsprrdingrods Clearance Time
by Miberjohn. 05/24/17 06:51 AM
Enjoy Great Savings,Get up to 70% Off Racing Parts
by Miberjohn. 05/24/17 06:50 AM
Cleaning out Gen II parts bin
by Brokeback. 05/23/17 04:13 AM
Support 4x4Wire
New Topics on TrailTalk
1999 Trooper 4x4
by MBrannon. 05/25/17 01:16 AM
SB 249 Coalition Letter to Key Legislators
by 4x4Wire. 05/24/17 04:37 PM
New here
by trailbabe. 05/24/17 09:28 AM
Maxsprrdingrods Clearance Time
by Miberjohn. 05/24/17 06:51 AM
Enjoy Great Savings,Get up to 70% Off Racing Parts
by Miberjohn. 05/24/17 06:50 AM
4x4 Gallery
Flex test after suspension mods
Clearance check!
Testing the new Kenda Klever 31x10.50x15
My '88
4x4Wire YJ
More News on the 'Wire

4x4Voice
4x4Wire
MUIRNet-News
OutdoorWire
Who's Online Now
0 registered members (), 42 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums37
Topics137,351
Posts1,078,604
Members14,669
Most Online581
Apr 3rd, 2017
Previous Thread
Next Thread
Print Thread
Rate This Thread
#1103340 - 04/28/17 10:19 PM Engine stumbles at take-off, please help!  
Nukeiridium  Offline
Body Damage is Cool
Joined: Aug 2002
Posts: 1,136
Mesa, Arizona
Hi all! Long time no see! laugh

So my Sporty has about 160K miles now. It has been good, but recently is having a problem.

When I hit the gas off the line, the engine will sometimes stumble and sputter, like it's missing or something. It seems to always do this at low throttle levels. It happens in any gear, not just off the line. The common thread seems to be when I'm giving it a little throttle. Once the engine revs up to higher RPMS and I open up the throttle more, the issue seems to go away.

I thought maybe I had a bad coil, so I replaced all the coils and plugs. Problem still there.

I have 2 check engine light codes, one for the O2 sensor bank 1 signal out of range, and one for knock sensor 1 signal out of range. I'm worried this is some kind of strange electrical problem.

Any ideas? Anybody seen a similar problem?

Sometimes starting from a dead stop, the sporty will shudder and shake forward and back until the engine finally revs up and stabilizes.

Sometimes it doesn't do it at all! It seems to depend on something, like temperature, or the phase of the moon or something. I'll have days where it doesn't happen at all. Crazy thing!

I checked the battery connections and they are tight btw. Kinda seems like something might be loose though somewhere.


2002 Sportage 4dr 4x4 soon to undergo an Extreme Makeover!

Support our sponsors

#1103341 - 04/29/17 01:19 AM Re: Engine stumbles at take-off, please help! [Re: Nukeiridium]  
4x4Wire  Offline

Trail Leader
Joined: Feb 2000
Posts: 5,747
Lakeside, CA ***
Clearing the faults causing the check engine codes is the first step.

One or both sensors are bad....


#1103345 - 05/04/17 10:56 PM Re: Engine stumbles at take-off, please help! [Re: 4x4Wire]  
Nukeiridium  Offline
Body Damage is Cool
Joined: Aug 2002
Posts: 1,136
Mesa, Arizona
I'm gonna replace both sensors this weekend. Wish me luck... I sure hope it's really the sensors that are bad, and not a problem with the wire harness!


2002 Sportage 4dr 4x4 soon to undergo an Extreme Makeover!


Moderated by  Axe Man, DamKia 

OutdoorWire Websites

OutdoorWire

OutdoorWire

Portal page for OutdoorWire Access and Landuse Central Read More
4x4Voice

4x4Voice

California off road recreation news and information Read More
MUIRNet News

MUIRNet News

News and information about issues affecting outdoor recreation Read More
4x4Wire

4x4Wire

Off road recreation and 4x4 Technical news and information Read More
TrailTalk

TrailTalk

4x4Wire TrailTalk Forums for a variety of 4x4 tech information Read More

4x4Wire Tech Section

Jeep 4x4 Tech

Jeep 4x4 Tech

Jeep Tech from JeepWire - Mods, Maintenance, Tech and more... Read More
Isuzu 4x4 Tech

Isuzu 4x4 Tech

Isuzu Tech from 4x4Wire - Mods, Maintenance, Tech and more... Read More






4x4Wire Social:

| 4x4Wire on FaceBook | Google+4x4Wire on Google+|


OutdoorWire, 4x4Wire, JeepWire, TrailTalk, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc. and MUIRNet Consulting.
Copyright (c) 1999-2017 OutdoorWire, Inc and MUIRNet Consulting - All Rights Reserved, no part of this publication may be reproduced in any form without express written permission
You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material.
All corporate trademarks are the property of their respective owners.

Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.009s Queries: 15 (0.003s) Memory: 0.8035 MB (Peak: 0.8875 MB) Zlib disabled. Server Time: 2017-05-25 14:15:16 UTC