o2 sensor

[bmlawson]

i have a 93 Z-34 and i can't find the o2 sensor to replace it. where is it?

[TheDirtyBen]

in the top of the rear exhaust manifold.

[bmlawson]

o2 sensor

how do i get to it? do i have to tilt the motor forward or is there a trick to it?

[robby1870]

tilting the motor should work

[TheDirtyBen]

hell, i remember that MY 3.4 DOHC wouldn't roll forward like the 3.1 MPFIs would. you could also try getting to it from underneath the car.

[ProjectMM]

from underneath works the best, but if you have a long enough extention( peferbly locking and the right 02 socket you can get if from the top, but it's easiest from the bottom.