Has it had another make of
ecu in it apart from the powerfc and the stock one?
Re: Sensor check: Just check them for continuity.......They're a magnet and a coil of wire resistance doesn't doesn't really matter as long as the circuit isn't 'open'.
Can't figure why the harness has been modded to that extent.
Go to
www.pdftown.com for the gc8 manuals
(password on the PDF's is 'pdftown')