Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical chat

LinkBack Thread Tools Display Modes
Old 08-07-2013, 11:11 AM   #1
Registered User
HolmaN's Avatar
Join Date: Jul 2013
Location: Sweden
Posts: 103
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.)


With kind regards, Jonathan from Sweden.

Last edited by HolmaN; 05-16-2014 at 01:42 PM.
HolmaN is offline   Reply With Quote
Old 08-07-2013, 11:20 AM   #2
Registered User
The Radium King's Avatar
Join Date: Apr 2010
Location: Canada
Posts: 2,987
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.

The Radium King is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 02:08 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page