Recently replaced my rear oxygen sensors and want to do the same with fronts. From crawling around under the truck it's not obvious where the wires from the sensors lead. They both vanish into the darkness above the transmission. RAVE (Ch. 17, Emissions, page 200, "heated oxygen sensor") procedure calls for removing the coil pack to access the multiplug, but only for the left hand sensor.
For those who have done this swap, what's the best way to access the multiplugs? From under the truck? From above, inside the engine compartment? Seems awkward no matter what. Any tricks that would help this go smoothly? I've already checked the sensors themselves to make sure they will loosen from the y-pipe.
For those who have done this swap, what's the best way to access the multiplugs? From under the truck? From above, inside the engine compartment? Seems awkward no matter what. Any tricks that would help this go smoothly? I've already checked the sensors themselves to make sure they will loosen from the y-pipe.