I bought a 2000 NB 2.0L 5speed 58K mi back in December 2011. Since then, I have had a MULTITUDE of issues. Finally, after it being broken down for a month, I took it to the mechanic. I've had the car back for about 3 weeks, and it's still throwing trouble codes at me. I have had code P1127...

I have the following codes: P0103, P0422, P1127 I changed out the MAF about 2k miles ago, the pre-cat O2 sensor at the same time, and have had these codes for about 6k miles. It idles rough, it lags, it is jumpy when it warms up and gets lower than usual gas mileage. I would just pay to have...