Pulsing Idle - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

 
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post #1 of 4 (permalink) Old 04-18-2012, 10:47 PM Thread Starter
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Pulsing Idle

Hey fellow commander owners. I have an 06 Commander with the 5.7 Hemi engine and 103k miles. I am certain I have fallen behind on my dealer suggested maintenance, but I am aware it is time to get some of it caught up. My first concern is my idle is "pulsing". The regular idle is approximately 700 rpm and it pulses down to about 500 rpm. I have actually had it die on me upon initial movement after shifting out of park. The pulsing is not 100% of the time, and seems to be more prevalent when the engine is cold. Any ideas?

Thanks,
Jeff

06' Commander w/ Hemi, AEM Brute CAI, Superlift 4" lift, BFG All Terrain (245/75/17), aftermarket 17" wheels, Tactical Armor front and rear bumper, Steel armadillo rock sliders.

91 Grand Wagoneer - SOA, resprung leaf springs plus add a leaf, 33" tires, cross over stearing, 4.56 gears, high flow exhaust, rebuilt 360 .030 over plus cam, Future mods: ARB Air lockers (front & rear) Heavy Duty Bumpers (front & rear), 12,000 lb winch, fender cutting & flares to fit 35" tires...
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post #2 of 4 (permalink) Old 02-20-2013, 10:27 PM
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Pulsing idle

Try spark plugs. I live in Alaska. Happened to me and for less than $20 it's worth a shot. Fixed my surging idle and man they looked rough.
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post #3 of 4 (permalink) Old 02-22-2013, 02:25 PM
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Join Date: Jan 2013
Location: Rockland County, NY
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Model year: 2006
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Power-Train: 5.7L V-8 Hemi
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20$ for 16 spark plugs!!!fill me in.

But really, if you haven't done it plugs are a great idea. I would also clean the throttle body, there notorious for oil sludge build up behind the butterfly valve. also put a can of sea foam through the gas tank, you can get it where you get your spark plugs.

06 Commander Limited HEMI. k&n drop in with air raid M.I.T . Aeroturbine 3030xl on stock pipe . Superchips tuned 93. Bilstein 5100 front @1.5 and 5100 on rear + ARB HD coils F/R
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post #4 of 4 (permalink) Old 02-22-2013, 08:39 PM
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Join Date: Nov 2009
Location: Georgia
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Model year: 2006
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I had erratic rpms at idle. Replaced my throttle position sensor and its been working great for over a year now.

2006 Jeep Commander Limited 4.7L QD II.....[I]4in Super lift Supension lift, Defender Roof Rack, 285 70R17 ProComp Xtreme Mud Terrain II tires, JK wheels, Rear grab handles, polished throttle body, RCV performance CV Axles, 4X Guard belly guard, front guard, jeepinbyals upper control arms, borla cat back exhaust and LED off road bar 40" and dully D2's.

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