Nightwolf
CEG'er
OK changed the plugs then changed the oil and found my O2 sensor plug unplugged well i plugged it back in then got in and drove around the block well it ran like SHizzle for a bit then it would clear up then if the RPM dropped down it would run like crap then pick up again, like a misfire, could it be that the PCM is retuning its self from the new information from the O2 sensor or is there something else i am over looking?