My '94 Pathfinder SE has developed a new issue that is driving me nuts. It consumes 30% more fuel than normal, and at idle the RPM's "tick" lower by 200RPM quickly and then recover. Acceleration and power are relatively normal and the only time I notice it is at idle both in gear and neutral.
I have R2'ed the O2 sensor, plugs cap and rotor, plug wires are not too old, and fuel fliter. I am leaning towards the fuel injectors or fuel pump, but I want to be sure.
Anyone have some ideas?