THere are 2 coolant temp sensors, one on the metal coolng/heater core lines, and one in the intake itself. The air temp. sensor is on the drivers side of the intake and is wired in with the injector harness, so it should be between the first and second injector on the drivers side, not the passenger side. The passenger side has two plugs almost identcal in with the injector harness and one goes to the temp sensor and the other to the diverter valve wiring for the emissions.