Quote:
Originally Posted by
SO69WA
how much is a new Harness, do you have to see oil at the plug end to be suss or can the problem exist before that,
Best to check the plug at the front of the head, as oil can travel to various sensors as well as to the ecu. Its been seen at the MAF and crankshaft position sensor connections at least. It can affect the operation of those sensors even if it hasn't yet reached the ecu plug.
Checking revs for varying throttle positions without any load is inconclusive, but your 1/4 temp with coolant sensor disconnected is a real indicator of a faulty sensor circuit or ecu.