NEEDFORSPEED, Yes ive got a power probe the reason ive asked the question in the first place was ive taken the whole engine loom harness out including ecu but pump still runs constantly i was wondering if the pump relay may be picking an earth up from sumwere else as there is an earth wire that goes to the main harness that isnt earthed coz its not plugged in. Ive also tried a continuety test from the main engine harness plug back to the fusebox but cant seem to find any of the wires that are meant to go to pump relay from harness