Hey Guys, I have a 2006 Jetta TDI with a check engine light that has been on for a long time and have not been able to track down the problem. I pulled the code as soon as the light came on over a year ago. The code is a P0102 Mass Air Flow sensor Low Voltage. The sensor has been replaced, the grounds of been check (although correct wiring information is hard to come by on these cars), the intake has been smoke tested for leaks and found a cracked pipe and a rubber has with a pin hole. Unfortunately the code still returns after being cleared. The car doesn't have any serious symptoms other then a 1/2nd gear stutter occasionally. If throttle isn't released it will proceed to over fuel and poor black smoke out the exhaust. It drives and runs perfectly 90% of the time. Does anybody have any suggestions on what could be causing this problem?