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Old 08-07-2013, 10:11 AM   #1
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Join Date: Jul 2013
Location: Sweden
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Idle problem - Part II

The other thread is getting too big since it's only including questions by me bacically.

Main problem:
  • The idle is pending when pressing the clutch / going into neutral when having the aircondition on. Doesn't matter if standing still or moving. Has happened to me while not having the AC turned on, but only 50-100 RPM tops, towards the 700 RPM drop with the AC turned on.
  • Note that this ONLY happens when the engine is warm. (I can have the AC on with no problem until the engine hits 80C.

List of solutions I've concidered:
  • The AC compressor. - Contacted a porsche dealer, and an expert told me they never, or atleast barly ever replace the AC compressors on porsches, since it's almost always other fualts.
  • Battery not taking enought chargeing?
  • Gererator or compressor wheel running slow?



Video of the problem : (I'm really sorry for how the video was recorded. But it was the best way to hold the phone while driving without dropping it.)

http://www.youtube.com/watch?v=cdbI27d0Muc&feature=c4-overview&list=UUTfgXFJAx_I0XUaEihE-


With kind regards, Jonathan from Sweden.

Last edited by HolmaN; 05-16-2014 at 12:42 PM.
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Old 08-07-2013, 10:20 AM   #2
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disconnect the battery to reset the ecu - the computer may still have some adaptations from when the idle sensor was fouled.

check the front of the engine - belt, idler pulleys, water pump, alternator, ac. remove the belt and check all pulleys for play and resistance.

check engine vacuum - a vacuum leak can mess with air/fuel sensing.
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