Thanks guys will give it a try

Thanks buddy cheers it was really oily when a removed it and the plug going into the harness do you think i might need an new ecu if a open it up and find its coated with oil as a found out i might need a new one and programmed

My td5 runs sluggish changed the fuel filter.airflow mass meter.cleaned the actuator at the turbo put a new air filter on it but a unplugged the ecu to find oil in the red plug do any of yous recommend changing the injector harness as i have heard this could be the problem running out of ideas...