Still rough idling!! Help!
#1
Newbie
Thread Starter
Join Date: Sep 2016
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Still rough idling!! Help!
Had posted a thread in regards to my 2001 Jeep GC Limited 4.7 4X4 idling very rough and shutting off. Been doing a lot of diagnosing and still nothing. Compression good in all cylinders, cleaned the TB, replaced the spark plugs, changed out my IAC valve, and still running really rough!!! My spark plugs show that it's running real rich, all came out black(new plugs). Got it up to highway speeds and it runs very smooth. I'm thinking it's a fuel issue cause when it's idling I can smell the excess fumes and at highway speed it runs smooth, I believe cause it's burning off that excess fuel. Need some help on this..... any ideas? Thanks.
#2
CF Veteran
I would say it's running way too rich. Not so familiar with the 01. What's your fp gauge tell you?
#3
Newbie
Thread Starter
Join Date: Sep 2016
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Definitely too much fuel, buying a fuel pressure gauge to see how much fuel pressure I'm runnng. Thru all this research I have come accross so many possible issues, it's crazy. Info overload, if indeed there is too much fuel going in, how am I going to diagnose what is causing it?
#4
CF Veteran
Definitely too much fuel, buying a fuel pressure gauge to see how much fuel pressure I'm runnng. Thru all this research I have come accross so many possible issues, it's crazy. Info overload, if indeed there is too much fuel going in, how am I going to diagnose what is causing it?
#6
Newbie
Thread Starter
Join Date: Sep 2016
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Appreciate the responses, which O2 sensor??? I think I counted 3 in all, 1 on the downpipe and 1 on each of the converters. Faulty O2 sensor would cause it to run rich????
Trending Topics
#8
CF Veteran
Definitely too much fuel, buying a fuel pressure gauge to see how much fuel pressure I'm runnng. Thru all this research I have come accross so many possible issues, it's crazy. Info overload, if indeed there is too much fuel going in, how am I going to diagnose what is causing it?
Thread
Thread Starter
Forum
Replies
Last Post
knolan1226
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
08-28-2016 10:53 AM
encinoman9345
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
4
08-26-2016 09:11 PM
Programbo
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
9
08-26-2016 05:45 PM
CCKen
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
08-22-2016 07:37 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)