Makes sense, I have gotten everything installed and the motor runs really rough and rich on the 98' ECU and I am thinking I will have to find a 00' ECU to replace it. I have the fuel system from the 00' ranger, but none of the wiring to go from the sensor and have no idea where it attaches into the remainder of the wiring that goes to the ECU. Not even my shop manual shows it on the wiring diagrams.