Well, the O2 sensor did not help my rough idle and running rich problem. I will say I’ve only driven the car about three times since I had the O2 sensor installed, so maybe I need more drive cycles for the computer to recognize the O2 sensor because I’m still getting a code 22 on pin four which says O2 sensor heater open or short circuit. I don’t know what else to look at on this car. I’ve already replaced the plugs, wires, coil, new cam, magnet, cap, and rotor. The only thing I haven’t done is put a smoke machine on it to see if there’s a vacuum leak.

Does this car have an IAC, and if so, where is it located?

Anyone have any other ideas?