Originally Posted by Lexmex
The first step is to remove the driver's seat (it may be possible not to do this and I will get to that later), but even the service manual mentions removing the seat, so I will do it here.
Move the driver's seat as far back as possible to reveal these two areas.
I replaced the A/F mixture sensor under the engine last year. Last week and CEL
came on again and showed that the other A/F mixture sensor near the manifold is
bad. So I opened the hood and replaced it with the Denso sensor. It only took me
2 minutes with my oxygen sensor tool and wrench. (because I had soaked it with
PB Blaster for 30 minutes to loosen it up)
The only sensor that I've never replaced is the oxygen sensor on the exhaust,
under the driver's seat. That sensor is the one that came with the car and has
never ever been replaced. I figure I might as well do it now. The Denso sensor
for that one is only $50 on Amazon.
Is it absolutely necessary to remove the driver's seat for this one? The carpet
under the seat has been pre-cut from the factory. When I reached in there with
my fingers, I felt the wire/connector of the oxygen sensor. What if I just make the
cut bigger? My carpet is black, so it will not be visible.