its job. This device controls air flow from the intake manifold to the throttle butterfly to maintain a smooth idle. If this part is bad, idle is rough for about 90 seconds then no problems.

It can be tested electrically. The three pins should have 40 ohms of resistance between 1 and 3 and 20 ohms of resistance between 1 and 2 or 2 and 3. If it fails these, replace. If not maybe cleaning it will help. Try not go let cleaner flow into the electrical motor part of the unit. It will carry a bunch of crud with it.

• 520i Auto Early morning jitters. - lightman 2005-09-19 08:37:05 (445 views)
  • I HAVE HAD EXACTLY THE SAME PROBLEM - nicholasgillis 2005-11-20 01:00:44 (383 views)
  • Just guessing that the Idle air control valve is not doing > - kff 2005-09-19 10:59:44 (528 views)
    • I am assuming the Idle air control valve = the AFM - nicholasgillis 2005-11-20 01:02:22 (372 views)
      • Nope. The ICV is a different critter. (pic) (url) - davidc 2005-11-20 02:20:15 (446 views)
        • Would this fix my early morning problems? - nicholasgillis 2005-11-22 20:52:07 (354 views)