Join Date: Dec 2005
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Sounds more like an Idle Air Control Valve fault or Throttle Position Sensor problem....
I'd try and locate the IAC valve,remove it,clean it and refit it.Can't for the life of me remember where they're to on the Mondeos,so you'll have to have a search about!.If that doesn't work,then the TPS's do give problems.The TPS should be on the opposite end of the throttle flap to the throttle linkage.
I'd rather push my Alfa than drive a BMW....
Currently in Lagdti's garage:
2004 Saab 9-5 HOT Aero and a 2001 Audi A3 1.8 Turbo