View Single Post
SoCal Driver SoCal Driver is offline
Registered
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
Lisa, For the 85.5's and newer 944's there is a large round "Test Plug" mounted on the drivers side fender just in front of the fuse-relay box. There should be several pins (and an LED depending on car year).

You have to jumper between pins B and C to over ride the DME's strong desire to keep adjusting the idle as you try to adjust the idle. Pulling the plug on the idle possitioner will center the IPV but not make the DME happy resulting in some interesting performance quirks.
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 09-11-2003, 10:05 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)