So yeah, my 95 Cavalier 2.2L has a very rough idle to it. If you open the throttle even the slightest bit, the car is fine! But if its left to idle on its own, its jumpy.

Also, the plugs & o2 sensor is black, and the exhaust spits a lilttle bit black if I really rev it up high. Seems to me like she's running to rich.

What do you suggest I do?

So far I have replaced the plugs & o2 sensor & cleaned out the throttle body... but its still does it. Any ideas?

TPS. Also, there may be a recall on the PCM, ignition switch.

Mine is in the shop now getting that done.