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09 Mar 2009, 12:28 pm
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Intermitent rough idle
I have a 2001 Cruiser. For several months I've experienced a random rough idle. It will is rough for a few seconds then levels out then repeats in unpredictable intervals. It does not happen while accelerating or cruising, only at idle. I have replaced the plugs & wires, cleaned the throttle body and replaced hte IAC. No luck. Any suggestions.
    
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09 Mar 2009, 04:16 pm
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Re: Intermitent rough idle
When you replaced the plugs, did you use the new .040in gap instead of what's listed? Did you make sure the wires were seated correctly?
__________________
  ...just CREWZIN along! ® . . . PT Cruiser Links Moderator  2000 PT. Original Owner, 110,000 miles MY technical suggestions are given in GOOD FAITH without total guarantee, if in doubt go to a Garage. Visit My Home Page www.CREWZIN.com
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09 Mar 2009, 04:29 pm
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Re: Intermitent rough idle
Im actually having the same problem with my 01
It always feels like its gonna stall on me but about 10 mins ago it actually did for the first time. It started right back up but I still wanna fix the problem. Ive noticed it only gets rough when the a/c is on.
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09 Mar 2009, 05:48 pm
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Re: Intermitent rough idle
There's loads of answers when you do a search for rough idle with and without the A/C.....
Rough Idle, hesitation Rough Idle Chrysler Repair: rough idle when stopped and air conditoner on, air conditoner, pt cruiser Rough Idle/ Air on! - PT Forums - The PT Cruiser Enthusiasts and Owners Resource
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...just CREWZIN along! ® . . . PT Cruiser Links Moderator 2000 PT. Original Owner, 110,000 miles MY technical suggestions are given in GOOD FAITH without total guarantee, if in doubt go to a Garage. Visit My Home Page www.CREWZIN.com
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09 Mar 2009, 06:59 pm
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Re: Intermitent rough idle
Plugs gapped correctly at .040, yes/no?? New performance wires, Crane or MOPAR, yes/no? Let us know.
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 2008 Silver Steel Metallic, Touring, NA, Sirius; Chromed door handles; lower grille; fog light surrounds; chrome front & rear bumpers strips; Airaid air filter; Bassani duals; Modesty Cover; Autolite AP5263 Platinum Plugs (.040); Crane Plug Wires; NAPA Ceramic pads; Blane hood struts; PTeazer Gas, Brake & Foot Rest Pedals, '05 Rear Step Pad, Stainless Door Sills, Llumar tint, "A" Piller chrome; APC Strut Bar
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10 Mar 2009, 01:41 pm
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Re: Intermitent rough idle
I believe I used the factory gap not .040, I'll have to check (once the rains stop). I used factory plug wires from a dealer and they were fully seated when completed.
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10 Mar 2009, 03:37 pm
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Re: Intermitent rough idle
Always, always, always check the setting on the plugs before installing. I have seen plugs from the box to be anywhere from .030 to .050 out of spec. both over and under spec. Be sure to use dialectric grease and anti seize on your plugs and wires. Torque plugs to 13 foot pounds. Snug the intake bolts, I use a 3/8" drive and just snug them. Replacement bolts cost $1.38, I know from experience.
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2008 Silver Steel Metallic, Touring, NA, Sirius; Chromed door handles; lower grille; fog light surrounds; chrome front & rear bumpers strips; Airaid air filter; Bassani duals; Modesty Cover; Autolite AP5263 Platinum Plugs (.040); Crane Plug Wires; NAPA Ceramic pads; Blane hood struts; PTeazer Gas, Brake & Foot Rest Pedals, '05 Rear Step Pad, Stainless Door Sills, Llumar tint, "A" Piller chrome; APC Strut Bar
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10 Mar 2009, 03:41 pm
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Re: Intermitent rough idle
Intake bolts are 8 ft lbs. Doesn't take much to snap them, Ernie, you and I know first hand.
__________________
...just CREWZIN along! ® . . . PT Cruiser Links Moderator 2000 PT. Original Owner, 110,000 miles MY technical suggestions are given in GOOD FAITH without total guarantee, if in doubt go to a Garage. Visit My Home Page www.CREWZIN.com
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23 Mar 2009, 11:40 am
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Re: Intermitent rough idle
I checked the plugs, wires, etc and all seems fine. The plugs were gapped to the factory (Chrysler) setting .050" and changed them to .040". Sadly no change.
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23 Mar 2009, 07:29 pm
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Re: Intermitent rough idle
Possible intake manifold leak. I've read you spray wd-40 along the seam while car is acting up and see if it smooths out...
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'05 Limited Turbo Lite, (Silver, of course)4-wheel ABS, Sunroof, Spoiler. Mods: E&G Classic grill, K&N FIPK, BTG duals, rear lowered 1.5", LED washer lights, $20 catch can, Aoogah horn, Weatherflectors, Sunroof Deflector, Fuzzy Dice, rear logo flames, rear pinstripe graphic, Gen3 Taillights, rear sway bar, hood struts, Strut bar. Traded in '02 Silver Touring Edition w/87,000 miles
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