Heres a weird one......

When water temp sensor is connected / unconnected idle is poor (about 6-700 rpm)

When A water temp is connected but NOT SCREWED IN TO HOUSING IDLE IS PERFECT - WHY?? ARRRRRRRRRRRGH!!!!!! PLEASE HELP...

CAR SPEC AS FOLLOWS (apologies for caps)

focus T230
Zetec turbo charged, pectel ecu , cossie map sensor (new), cossie water temp sensor, cossie air temp & cossie boost control (2 port amal valve) all connected to pectel ecu...sorry im such an amateur but am trying to avoid getting ripped by mechanics any further....

cheers guys n gals any help is always appreciated....