Cherokee Chat General non-tech Cherokee chat
XJ/MJ/ZJ/WJ
Sponsored by:
Sponsored by: DashLynx

simple question

Thread Tools
 
Search this Thread
 
Old 11-30-2010, 07:36 PM
  #1  
Newbie
Thread Starter
 
trevorransdell's Avatar
 
Join Date: Nov 2010
Location: salt lake
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 L6
Default simple question

my 2000 cherokee has a bit of a rough idle, but doesn't seem to have a misfire. It's just idling low. Anybody else had this problem? any advise on how to diagnose the problem? help me out
Old 11-30-2010, 07:59 PM
  #2  
Junior Member
 
DPoffroad's Avatar
 
Join Date: Nov 2010
Location: Mt. Hood, OR
Posts: 49
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Engine: 4.0
Default

Try replacing your oxygen sensor and/ or your map sensor. They're generally pretty cheap
Old 11-30-2010, 08:21 PM
  #3  
CF Veteran
 
gpXJ's Avatar
 
Join Date: Sep 2009
Location: Grand Prairie, Texas
Posts: 1,142
Likes: 0
Received 2 Likes on 2 Posts
Year: 1998
Model: Cherokee
Engine: 4.0 HO I6
Default

Air filter been replaced lately? Otherwise, x2 on what ^^^ said.
Old 12-01-2010, 01:07 AM
  #4  
CF Veteran
 
Donnie_K's Avatar
 
Join Date: Jun 2009
Location: Columbus, Ohio
Posts: 2,173
Likes: 0
Received 0 Likes on 0 Posts
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
Default

HOW low?
Old 12-01-2010, 04:07 AM
  #5  
CF Veteran
 
00jeepXJ's Avatar
 
Join Date: Apr 2009
Location: Kalamazoo, MI
Posts: 1,601
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0L with throttle body spacer and cold air intake, bored throttle body, #784 injector upgrade
Default

My 00 XJ would idle around 500- 700 rpm with the stock injectors. wouldn't stutter but would just do this and keep right on going. When I upgraded my injectors to the #784 neon injectors it took it away and now it idles around 650-700 rpm.
Old 12-01-2010, 12:51 PM
  #6  
Newbie
Thread Starter
 
trevorransdell's Avatar
 
Join Date: Nov 2010
Location: salt lake
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: 4.0 L6
Default

i put a k&n filter in it about 2500 miles ago. it idles at about 1000 when its cold started and then when it warms up and stops high idling, it sits at about 600.
Old 12-01-2010, 05:39 PM
  #7  
Senior Member
 
shooter5635's Avatar
 
Join Date: Aug 2009
Location: Carbondale, Illinois
Posts: 853
Likes: 0
Received 0 Likes on 0 Posts
Year: 2000
Model: Cherokee
Engine: Inline 6
Default

when it's cold the computer basically enters a "fuel dump" setting so it idles slightly higher to warm the engine faster and once it is warm, the idle drops down

or so im told
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Bradly Mitchell
Jeep Builds
5
10-24-2015 08:53 PM
moish
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
09-19-2015 11:55 AM
Andrew20jackson
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
9
09-15-2015 11:27 PM
Andrew20jackson
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
1
09-14-2015 05:28 PM
carid
Vendor Showcase
0
09-10-2015 08:56 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: simple question



All times are GMT -5. The time now is 08:48 AM.