Autozone's diag. machine said it's my oxygen bank one sensor. They said it was on the exhaust manifold? Can't find it anywhere. Where is it? Easy to replace? Cost? Thanks, Tom
find the passenger exhaust manifold...follow it down to the catalyst and the first o2 sensor you hit is bank 1 sensor 1...look under the truck. passenger side of the bell housing.. make sure you follow the first instruction so you can test the right part.
yes its easy to replace.
and the cost depends on where you buy the sensor. toyota o2 sensor is around $150...but don't count me on that quote...