I've got a '94 Nissan Sentra that doesn't idle very smooth. When in gear it chugs to the point you can actually feel it jerking you a bit. However, as soon as you step on the gas it zips right along fine. When it's in park it's not near as bad, but it definately feels like it's missing or something.
At this point I've changed plugs and wires, pcv valve, and air filter. It seemed to help some, but certainly hasn't fixed the problem. I'm thinking about replacing the dist. cap and rotor, but if that were the problem wouldn't it still act up even when going down the road?
Any help is appreciated,
Brad