I have a 03 g35 sedan. I changed the water pump last week and now have the p011 and p022 codes. It runs like crap at idle, dies if you stomp on pedal and let off quickly, but runs smooth as silk when driving. I checked oil level and it was a couple quarts low so I topped it off. At one time I only had the p022 and the p0300. Right now its only the 22 and 11 but im sure with some driving the 300 will come back. Can changing the water pump have something to do with this? The chain didnt jump and I assume that if it had it would run like crap regardless of throttle position.