Does anyone know how the Idle control valve works on a Citroen Synergie 2.0 petrol. The revs are dropping low and sometimes stalling at junctions. I cleaned up the IAC and with it removed from its housing turn on the ignition and I can feel 3 pulses from the unit but the plunger does not move. I was told that the pulses I hear will be the stepper motor making sure it's at the start point so I won't necessarily see the plunger move. Do these only move when you start the vehicle and if so is there any way to check that it's working ok.
- posted
18 years ago