Hi,
Slowly but surely my car starting having a problem at 2,000 RPM, (1,950-2,050 at most). It would appear to stutter, buck, hesitate, not run smoothly. A needle width higher or lower RPM and it would run fine. Accelerating through 2,000 was also fine. This started over a year ago and has gotten worse over time. Asking the forums did not get a solution.
Last week I cleaned the MAF sensor with MAF cleaner. Drove the car the next day and had no problems at all, the issue was completely gone.
Tim.