One of the most common problems with an engine that is not putting out as much power or pep as you are used to, is that of a faulty or failing mass air flow (MAF) sensor, both with and without a check ...

When the air mass sensor on my car is plugged in, it drives terribly, goes into limp mode before 3000rpm. When the sensor is unplugged it drives okay. What can I do? Why will my Citroen Xsara not rev ...