only an autodata online one that gives incorrect terminals to the ecu pins for the fps.i had to trace the wires back from the sensor to the ecu with an ohm meter and then checked individual wires by putting current down them via a 21 watt bulb (connectors and battery disconnected).on delphi systems is the signal wire usually the centre terminal on the fps?which is earth and 5v supply?i have 2 x 5v supplies with the sensor disconnected!
when talking about the poor earth could it be the ecu earth to body? but would that not affect more circuits?.thanks again paul.