Same as the post on the old board. 91 Civic W/a D16a6. Code 1: Oxygen content. Getting a code 1, and in extreme city driving when there's no air gettin on the engine she idles at 2000 rpm... I can pull out on the gas pedal and it stops...Until it's depressed again. Doesn't happen on the highway or just regular driving. I put in a different (not new) o2 sensor, I KNOW one of them is good but still the same thing. All my grounds have been checked. The throttle linkage is ok, No vacume leaks. ANY ideas?... I wanna get this beaotch figured out.