hello i am new to this form i have a 1.6 zetec ford focus on a 53 plate and i am missing a wiring plug which is causing the car idle rough if someone could tell me what that plug is and what i need to do thank you. i have also added some pictures the plug is behind the inlet manifold and on the right side of the alternator


[img=http://img851.imageshack.us/img851/2681/dsc00007c.th.jpg]

[img=http://img51.imageshack.us/img51/9462/dsc00006gwg.th.jpg]

 

That will be your MAP sensor. And yes it will cause rough idling and the engine to stall if you dip the clutch while moving.
Look along the injector loom and there should be a wire comming off it directly above the MAp sensor.