This article applies to the Mercedes-Benz E-Class (2002-2009). The Mercedes-Benz E-Class oxygen sensor is the main component for the emission control system. When it's not working properly, the engine ...

Modern car engine control systems rely on input from several sensors to regulate the engine’s performance as well as its emissions and other vital functions. When these sensors fail to provide ...

This article applies to the Porsche 997 (2005-2012). Engine performance is all about a magical mixture known as Air:Fuel Ratio or AFR. The Porsche 997's engine control unit, or ECU, wants to manage ...

This article applies to the Porsche 911 993 (1993-1998). The oxygen sensor in your Porsche 993 plays a very important role in how your car operates. This little gadget can cause many headaches when it ...

Don't let failing oxygen sensors compromise your engine's performance. O2 sensors are critical to emissions control on your car, SUV or truck. As the name implies, the O2 sensor (also called an ...

This article applies to Mercedes-Benz E-Class AMG (2002-2009). Oxygen sensors are some of the most important components in modern fuel injection systems. The oxygen sensors located before the ...

With fuel prices rising, the need for accurate air/fuel mixture monitoring is more important than ever. The engine computer needs to know what the fuel mixture is with a high degree of precision so it ...