just had my car back form the garage after i was sick of my car cutting out at junctions and idleing like a bag of s**t.
these are the parts u will need to fix your mk4 polo
IDLE CONTROL VALVE £71.30
TEMP SENSOR-4 PIN BLK/YEL £12.48
I got both these parts from GSF Euro's didnt sell them
if this doesnt fix your problem then buy a FORD!!!!!!!!!