Stumbling from idle to about 2900? -
LinkBack Thread Tools
post #1 of 2 Old 05-11-2010, 08:36 AM Thread Starter
Registered User
1989 XJ Cherokee 
Join Date: Sep 2006
Location: Carmel, NY
Posts: 166
Stumbling from idle to about 2900?


I did a few mods now I am stumbling from idle to about 2900rpm. Its not terribly slow but you can feel/hear it has a small stumble, like if it may be lean, until 2900 and then it pulls all the way up. Just looking to see if anyone here has any ideas.

Rig: 89 XJ
Rebuilt motor about 60k on it (Renix FI and Renix Head)
Borla header heat wraped
2.5" cat/catback
99+ intake manifold
Injectors from a 98
Fuel pressure right now 57psi trying to make up for lean condition
Taurus fan swap
Map adjuster set to 5.56 volts
Homebrew CAI w/relocated IAT sensor


For Sale: 89' Limited w/ Renix. Performance:Custom Cold Air Intake, Air Temp Conversion, Map Adjuster, Throttle Body Conversion Bored, 99+ intake manifold, 98 injectors w/ 99 fuel rail, bumped fuel pressure, Borla Wrapped Header, 2.5 in exhaust header back, open loop cooling, electric fan conversion, SS brake lines, 96+ brake booster and still getting 20 mpg highway

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
GrayBomb is offline  
Sponsored Links
post #2 of 2 Old 05-11-2010, 08:47 AM
Registered User
irishgobrah's Avatar
1995 XJ Cherokee 
Join Date: Dec 2009
Location: Cranston, RI
Posts: 126
How long has it been since the fuel filter has been replaced? Hopefully it's something as simple as that.

93 XJ :Rusty's 3" w/ 31x11.5 swampers-hooked my brother up
96 XJ :Rusty's intake/exhaust kit-hooked my dad up
00 WJ :clear lenses from an 04-wife's DD
95 XJ :2dr slowly coming along!
irishgobrah is offline  

cherokee , lean , performance , renix , stumble

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Still Stumbling! Need Help! kongpheng XJ Cherokee Technical Forum 13 11-03-2008 06:09 PM
So I got a 98 Classic yesterday for $2900 Dexafaust XJ Cherokee Technical Forum 8 03-01-2008 08:53 PM
Stumbling at idle but drives ok?? 96xj 4.0 ChaoticBastard XJ Cherokee Technical Forum 3 11-17-2007 04:19 PM
stumbling now and then?? shierkahn XJ Cherokee Technical Forum 13 12-02-2006 12:59 PM
92' laredo worth $2900? Harrison XJ Cherokee Technical Forum 18 12-11-2005 08:17 PM

Posting Rules  
You may post new threads
You may 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 On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome