Clutch Master cylinders

Automotive oxygen sensors, also known as O2 or Lambda sensors, make modern electronic fuel injection and emission control possible. They help determine, in real time, if the air fuel ratio of a combustion engine is rich or lean. Since oxygen sensors are located in the exhaust stream, they do not directly measure the air or the fuel entering the engine. But when information from oxygen sensors is coupled with information from other sources, it can be used to indirectly determine the air-to-fuel ratio this emissions control technique can reduce the amounts of both unburnt fuel and oxides of nitrogen entering the atmosphere. Volvo was the first automobile manufacturer to employ this technology in the late 1970s. A faulty Oxygen Sensor will see an increase in either tailpipe emissions, poorer fuel economy, hesitation on acceleration as well as rough idling.