Author Topic: Jumpy Idle  (Read 266 times)

Offline RenegadeJoe

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Jumpy Idle
« on: March 28, 2017, 10:50:51 AM »
I just recently bought a 2011 liberty I put in new copper NGK plugs gapped to 0.043. Even before I did this it was a little jumpy, I added Lucas fuel cleaner and lube to the tank as well as directed. Has anyone had any problems with the fuel cleaners? Any ideas?

Offline SJJEEP

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Re: Jumpy Idle
« Reply #1 on: March 28, 2017, 11:31:51 AM »
is it only giving you this problem in this rainy weather
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Offline Greenhorn

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Re: Jumpy Idle
« Reply #2 on: March 28, 2017, 11:35:59 AM »
coil packs?
is the CEL on?
I bet it says "misfire in cyl *"
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Online Space Shuttle Commander

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Re: Jumpy Idle
« Reply #3 on: March 28, 2017, 11:37:40 AM »
throttle position sensor
Sometimes I get to drive Becca's Jeep

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Online Space Shuttle Commander

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Re: Jumpy Idle
« Reply #4 on: March 28, 2017, 11:38:00 AM »
vaccum leak
Sometimes I get to drive Becca's Jeep

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Offline MasterDrazhar

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Re: Jumpy Idle
« Reply #5 on: March 28, 2017, 11:42:22 AM »

 If you clean out/replace the TPS also clean out the IAC on the throttle body. They get all gummed up with carbon.

 
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Offline King of the Hill

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Re: Jumpy Idle
« Reply #6 on: March 28, 2017, 11:48:32 AM »
I was going to say Dirty Throttle body.  Used to happen on my grand Cherokee all the time with a K&N filter.  I actually went back to a paper element and the problem went away.
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Offline Groundhog

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Re: Jumpy Idle
« Reply #7 on: March 28, 2017, 05:58:09 PM »
Russians
"There is a deep laid plot against your civil & religious liberties. Your golden days are at an end. My heart bleeds for you, America."
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Offline harryhood

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Re: Jumpy Idle
« Reply #8 on: March 28, 2017, 06:04:32 PM »
Solar flares
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Online Necroscope

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Re: Jumpy Idle
« Reply #9 on: March 28, 2017, 06:38:03 PM »
EMP...gets 'em every time...
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Offline A new level

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Re: Jumpy Idle
« Reply #10 on: March 28, 2017, 06:57:14 PM »
It should be throwing a code
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Offline JBert

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Re: Jumpy Idle
« Reply #11 on: March 31, 2017, 07:03:31 AM »
Check the Flux Capacitor.  People seem to over look it every time.
-Justin-
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Offline SJJEEP

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Re: Jumpy Idle
« Reply #12 on: March 31, 2017, 07:13:03 AM »
It could be winter air in tires.  It needs to be changed for summer.
God bless America

PLAN YOUR WORK
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Offline MasterDrazhar

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Re: Jumpy Idle
« Reply #13 on: March 31, 2017, 07:28:07 AM »

Check the Flux Capacitor.  People seem to over look it every time.

http://www.oreillyauto.com/flux-capacitor.html
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Offline markus68

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Re: Jumpy Idle
« Reply #14 on: May 28, 2017, 06:27:46 AM »
Just noticed this old post,,,my jk does this too when its hot out and sitting in traffic,,,idles way down just once in awhile (is it going to stall goes through my mine)...crazy,,,,,going to check some of these fixes......
Mark