Bouncing RPM at Idle - JeepForum.com

 
LinkBack Thread Tools
post #1 of 6 Old 11-29-2012, 10:30 AM Thread Starter
xj-jake
Registered User
1999 XJ Cherokee 
 
Join Date: Mar 2011
Location: Litchfield
Posts: 106
Bouncing RPM at Idle

88 XJ when I start it in the morning it'll idle fine but the RPM's will bounce 2-300 rmps. Thinking possibly tps? IAC is clean along with the throttle body just did those last week along with spark plugs. I know I'm due for a cap, rotor and wires. Any thoughts?


99 XJ 6.5" IRO Long Arm on 17" Pro Comp 7086 wheels w 33" Tires
xj-jake is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 11-29-2012, 10:41 AM
jminty
Registered User
2005 TJ Wrangler 
 
Join Date: Jul 2012
Posts: 52
Similar problem with one of my work trucks just the other day. Turned out to be the distributor. Id start there.
jminty is offline  
post #3 of 6 Old 11-29-2012, 01:41 PM Thread Starter
xj-jake
Registered User
1999 XJ Cherokee 
 
Join Date: Mar 2011
Location: Litchfield
Posts: 106
any other thoughts?

99 XJ 6.5" IRO Long Arm on 17" Pro Comp 7086 wheels w 33" Tires
xj-jake is offline  
post #4 of 6 Old 11-29-2012, 02:43 PM
bobthecatkiller
Web Wheeler
2000 XJ Cherokee 
 
Join Date: Feb 2011
Location: binghamton
Posts: 1,415
"I know I'm due for a cap, rotor and wires. Any thoughts?"
Do this first then post back if it didn't help.

"****, I might **** around and bring the Jeep back No doors on it, flexin' with the seat back"
bobthecatkiller is offline  
post #5 of 6 Old 11-29-2012, 03:59 PM
bigbill888
Registered User
1996 ZJ 
 
Join Date: Nov 2009
Location: michigan
Posts: 969
is ac compressor kicking in and out when it does this? Is heater on defrost?

96 ZJ Laredo, 4.0, 242, 230K
95 ZJ Limited, 4.0, 242, 140K
98 XJ Sport, 4.0, 231, 140K
All work well
bigbill888 is offline  
post #6 of 6 Old 11-30-2012, 03:50 PM
PsychoSMurf
Registered User
 
Join Date: May 2012
Location: Anaheim
Posts: 35
Maybe check your vacuum limes, especially the ones in and out of your intake manifold. That happened to me, one little line came out and affected everything.
PsychoSMurf is offline  
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.



Email Address:
OR

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.




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



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