Help needed.

My car is hunting on idel and on the move at low revs will die then pick up. When the car comes on boost it clears and revs out fine. This is my first fez rst after owning escorts and havn't got the first idea whats wrong with it.

Thanks Ollie.

 

Could be the idle speed control valve Does it cut out? Might be the EDIS Ignition Module Is the car chip? If so run it with out the chip