The Volvo 850 Oxygen Sensor provides quick feedback in relation to the amount of exhaust gases, thus enabling the engine computer to adjust the amount of fuel flow to ensure cleaner running and a sharper throttle response. The Oxygen Sensor has a zirconium dioxide element packed into a tough stainless casing, where an internal heater raises the temperature of the element to 600 degrees Fahrenheit and then the element generates 0.1 to 0.9 volts in milliseconds, a voltage difference that provides the sensor with the timing signal for the injector to ensure the emission levels remain low and the power is high. It will fit all 850 models including the early four-door saloon, the later estate, T-5R, R and AWD models, ensuring equal efficiency regardless of the powerplant (naturally aspirated and turbocharged) for Volvo fans. Its continual desire to maintain the optimal air-fuel ratio assists the catalytic converter in working at the optimum conversion rates that not only reduce the amount of pollutants but also ensure that people do not inhale the foul smell in addition to preserving the environment. Drivers are aware of smoother idle operation, faster starts and fewer trips to the petrol pump due to the lack of the rich fallback mode that causes wastage of petrol when an old Oxygen Sensor deteriorates on an 850 that still has many miles of service ahead. An additional remarkable attribute is the dual positioning, whereby the upstream unit controls the mix and the downstream unit monitors the health of the converters, and thus the warning light is lit only when there is actual trouble, hence the owners are not compelled to guess. To ensure that the Oxygen Sensor can be fed into closed loop during a short winter drive, Volvo engineers added additional heating capacity to the design, which reinforces the idea of the brand thinking of its safety. High-strength platinum electrodes help to overcome silicate, phosphorus and carbon pollution and provide the part with a long life that is equal to the tough spirit of any Volvo on the road.
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