Main Menu

engine won't idle down without bouncing rpm

  • 1998
  • 911 Carrera 4S
Mileage: 
120 000
Engine
Woodinville, 
Washington

I have a 1998 Carrera 4S that has the issue of not being able to idle down smoothly.  When coming to a stop from anywhere above 30-40 mph, the engine revs to 1500-2000 rpm typically three times before settling down to a normal idle speed.  I've replaced the idle stabilizer valve with only a little improvement, then removed and cleaned it with no change.  This is an irritating problem and I don't know where to go from here.

Any thoughts?

You must log in to view answers associated with technical questions. Join PCA to participate in our community.
0
No votes yet