Po113 po106.changed every component,chokes up still

Question

This polo is driving me mad.will drive fine all day till u stop for 10 mins,start it up,it struggles to tickover,hold throttle at 2000 revs,if clears,but brings the light back on,tick over then at 800 smooth.changed,,maf,,air intake sensor,,coil packs,,temp sensor,,plugs,,they were sooted up..I found a broken wire on the air intake sensor,resoldered it,,now running out of ideas,,help.car is 06 1.2 polo heap,,,regards everett.