Symptoms of a malfunctioning NOx sensor include increased fuel consumption, as well as reduced power and acceleration. If a sensor fails, it will also trigger an on-board diagnostic (OBD) code, ...

Diesel trucks are built tough and can last up to five years without issue. However, I've worked on trucks — both professionally and in my garage — for a decade, and I've seen how long they can last ...

A mass air flow sensor is one of the numerous tiny widgets and gewgaws that make up a modern automobile's electronic fuel injection system. In the MAF's case, it tells the car's computer how much air ...

The throttle body controls airflow into an engine. For fuel-injected engines it’s usually housed between the air filter and intake manifold. Keeping this component clean can help your vehicle deliver ...

Your engine needs a steady stream of clean air to function properly, and it's the job of the mass air flow (MAF) sensor to measure and regulate the amount of clean air entering the intake. The engine ...

Your DPF and DOC don’t fail overnight—they fail slowly, one idle session and one short trip at a time. Some think emissions system issues are bad luck or bad engineering, but the truth is these ...