I turned up my fuel pressure to where it was when I got the car (according to the gauge at the schraeder, 60 PSI or so), but the car has been running fine, so I'm thinking the gauge is whacked.

NOW, I got a code today that says I'm still running lean.

It was saying this before when I had the FP turned way down, but it said rich last time it was at it's current setting. Now it's saying lean again.

Is my 02 sensor the thing that's messed up in all this?

-Reno

 

It could be. But it also can be a fuel pump on its way out. Just cause you see preassure does not mean the volume is there. I think 60psi is way high. Stock at idle with the vac line disconnected is someting like 52 I think. I belieave you prime the fuel system then pinch the return line off back to the tank. There should not be a decrease in the fuel preassure at your guage. If there is it could be a bad regulator or leaking fuel injectors. This of course is done with the car off