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  1. Nov 23, 2009 · The post-cat (aka downstream sensor) ONLY monitors the catalytic converter to make sure that it is working. The pre-cat (upstream sensors) are what the computer (aka ECM or PCM) uses to control the air / fuel ratio.....these DO have an impact on fuel economy. As a oxygen sensor ages, the switching speed slows down.

  2. 1. Upstream / Pre Catalytic Converter Oxygen Sensor: The upstream oxygen sensor is situated before the catalytic converter in the exhaust system. The ECU primarily calculates the optimum air fuel ratio based on the amount of oxygen measured by the upstream sensor in terms of voltage. The higher the voltage, the richer is the air-fuel mixture ...

  3. In this video you will join me in learning about the new Air/Fuel Sensors (AKA Wideband O2 Sensors) used on vehicles today which replace the traditional Zirc...

    • 30 min
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    • Schrodingers Box
  4. May 13, 2024 · When choosing between cheap and expensive O2 sensors, consider factors like budget, sensor quality, compatibility with your vehicle, reviews from other consumers, and advice from mechanics or automotive experts. It’s important to balance initial costs with long-term benefits for your vehicle’s performance and budget. Ben Wilkinson.

  5. Jul 9, 2022 · ☛ All The Links to Best Oxygen Sensors listed in this Video:- 5. Bosch 17025 Oxygen Sensor.https://www.amazon.com/dp/B009J3EXGQ?tag=trcbpy-20 4. YCT Oxygen...

    • 5 min
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    • Best Review
  6. Apr 5, 2022 · 2. Bosch Premium Oxygen Sensor. Check Price. Bosch invented the oxygen sensor and began producing it in 1976, so in other words, when it comes to O2 sensors, they’ve got more experience than any ...

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  8. Apr 26, 2022 · Other signs that you need a new oxygen sensor include a rough idle, misfiring spark plugs, lack of power, stalling or a significant increase in fuel consumption. Those symptoms could also be ...