Mattman240
Member
I recently changed my camshaft position sensor, crankshaft position sensor and lift pump to clear a few codes and get my 2004 beetle tdi running again. I replaced the Mass airflow sensor not long ago also. It's running but my mpgs are way down. I went from 42 to about 35-33 mpg. I noticed some smoke when shifting from 2nd to 3rd and the car sputters a bit before the smoke blows out. I cleaned a ton of gunk from my egr while I was tinkering. It was caked on really thick. I'm getting a Mass airflow sensor code (signal implausible) when coasting from highway speed to merge with traffic. I cleared the maf code and it comes back after a couple hundred miles or so despite my spraying it with maf sensor cleaner. I have a vcds lite and would be happy to post some measuring block data with a little guidance. All help and suggestions is appreciated, thank you!