yeah, but thats what I dont understand, if I take the plug off, it is dead what ever (ignition on/engine off or Ignition on/engine on) which would suggest the sensor itself (even though it is only three weeks old) is buggered, yet if i plug it in, it read max under one set of circumstances and doesnt read under another, just want to be sure it is the sensor before i got and fork out for another new one.

Cheers