Internal combustion engines were an industrial marvel when the first practical models were finally constructed way back around 1850. It took another forty years or so to figure out what to do with it, however, and another eighty years after that to understand the consequences. By the mid 1970's, two facts became painfully apparent: first, the supply of cheap, plentiful oil was not unlimited, and secondly, burning the remains of several hundred million-year-old vegetation was starting to have detrimental effects on the air of the here and now.

The Chevy Tracker Oxygen Sensor is part of today's sophisticated, more environmentally friendly exhaust systems. A Chevy Tracker Oxygen Sensor helps to reduce both fuel consumption and tailpipe emissions by helping the fuel injectors to set the optimum fuel to air ratio, or "mixture." The best mixture is one that allows the engine to run at peak power and performance while minimizing exhaust emissions and fuel use.

A Chevy Tracker Oxygen Sensor takes measurements of the amount of oxygen present in the exhaust gases, then sends an electronic signal based on this data to the fuel-injection system. The fuel injector then adjusts the mixture accordingly, reducing fuel flow for straight and level driving and increasing it when needed for hilly roads or towing a trailer. An defective oxygen sensor can lower engine power and performance and fuel consumption as well as increase potentially toxic emissions. If this is the case, your Chevy Tracker Oxygen Sensor should be removed and a new factory unit installed in its place.Shop here first and you'll find the lowest discount prices on parts and accessories for any of your Chevy needs.