11-24-2013, 11:09 AM
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#1
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Registered User
Join Date: Jul 2013
Location: Oslo, Norway
Posts: 325
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Rough idle when warm, anyone knows why?
Only when warm, not when cold, its chasing when idling. Anyone? (Replaced MAF 3 weeks ago, and this problem just arrived..)
Jager på tomgang - YouTube
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11-24-2013, 11:24 AM
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#2
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Registered User
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
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I am thinking, vacuum leak. Did you check to see if the AOS is good. Also, was this an issue before replacing the MAF.
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11-24-2013, 11:32 AM
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#3
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Registered User
Join Date: Jul 2013
Location: Oslo, Norway
Posts: 325
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I'm considering vacuum leak also. How do I check the AOS? No, this problem arrived friday and only when warm.
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11-24-2013, 12:17 PM
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#4
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Registered User
Join Date: Apr 2009
Location: Orlando
Posts: 1,266
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Quote:
Originally Posted by haz
I'm considering vacuum leak also. How do I check the AOS? No, this problem arrived friday and only when warm.
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When the engine has warmed up, try removing the oil filler cap. If it does not unscrew and remove easily then the AOS is not working as should. Then replace it. Are there any codes being thrown?
I usually work backwards...put the MAF back on and see if it has the same problem. If not then put the new back on and make sure it is seated correctly...you also could have a bad part.
__________________
http://i768.photobucket.com/albums/x...6/PC120055.jpg
Old Hippie Young Heart
2000 S/3.2 Liter/Tiptronic/Boxster S Sport Package/Cruise Control/Slate Grey Metallic
Red Special Leather Interior/Red Floor Mats/Red Hand Painted Instrument Dials/Roll Bar/Windstop
Small Carbon Package/Leather Wrap Carbon Wheel/Center Console Exterior Color/Alum Carbon Shift Knob
AM/FM Radio w/CD Player & Changer/Digital Sound Package/18" Turbo Wheels/Wheel Caps w/Colored Crest
Last edited by jcb986; 11-24-2013 at 12:27 PM.
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11-24-2013, 09:46 PM
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#5
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Registered User
Join Date: Dec 2010
Location: South Wales UK
Posts: 139
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Just a thought, did you disconnect the battery before you put the new maf on ? this will allow the on board computer to learn all the settings from new, it may be working on the old maf settings.
Guvs.
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11-24-2013, 11:14 PM
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#6
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Registered User
Join Date: Jul 2013
Location: Oslo, Norway
Posts: 325
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Quote:
Originally Posted by Guvs
Just a thought, did you disconnect the battery before you put the new maf on ? this will allow the on board computer to learn all the settings from new, it may be working on the old maf settings.
Guvs.
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No, but the new has MAF worked fine. It did not throw any codes either after new MAF + the car has the new software (this newest MAF requires it).
Quote:
Originally Posted by jcb986
When the engine has warmed up, try removing the oil filler cap. If it does not unscrew and remove easily then the AOS is not working as should. Then replace it. Are there any codes being thrown?
I usually work backwards...put the MAF back on and see if it has the same problem. If not then put the new back on and make sure it is seated correctly...you also could have a bad part.
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I will connect the casr and check for codes on saturday, as I was planning to visit my friends Porsche-garage anyways. I will also check your "unscrew the oilcap"-trick after work today also 
Thanks so far guys!
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11-25-2013, 11:15 AM
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#7
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Registered User
Join Date: Jul 2013
Location: Oslo, Norway
Posts: 325
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Someone tipped me it could be the "idling regulator" (if dat is de engrish wørd for eet)
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11-25-2013, 11:57 AM
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#8
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Registered User
Join Date: Dec 2007
Location: Seattle
Posts: 735
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Try cleaning the throttle body.
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3X Water Pump, Clear side markers, Crios Mod, Front engine mount, Flywheel, clutch, RMS, AOS, MAF, serpentine belt, power brake vacuum line, battery, 2X CV boots, Fuel filter, Oil filler tube, 3X ignition switch, 90K service, gas cap, Coolant tank
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11-25-2013, 12:22 PM
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#9
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Registered User
Join Date: Jul 2013
Location: Oslo, Norway
Posts: 325
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Thanks! Added to my check list for this saturday 
Will also check the Idle speed control valve.
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