Posts with Keyword “diy”

Commonly, a dirty or bad Mass Air Flow sensor is believed to lead to a lean condition. However, my experience is that it’s more likely to lead to a rich condition at idle. Here, I compare STFT and LTFT before and after cleaning the MAF sensor.

This serves as a guide for those who want to repair the soft-close functions (doors & trunk) in their W220 Mercedes S-Class but haven’t found clear views of the steps online.