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how much does O2 sensor really affect mpg | Chevrolet ...

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· I''ve had my O2 sensor act up on my last 3 cars. My last car continued getting about 33 mpg for 100,000 miles after sensor came on. My gf''s malibu is getting horrible mileage but it got this b4 sensor ever went bad. so, does it really affect gas mileage that much. I know generic numbers get plugged in anyways.

5 Signs Your Oxygen Sensor Is Bad | Oil Filters Online Blog

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· Newer vehicles made in mid1990s and later, replace the oxygen sensors every 100,000 miles. Conclusion, properly functioning O2 sensors are critical for optimal fuel consumption and good car performance. When in doubt, it is best to replace your faulty oxygen sensor at most, every 100,000 miles.

Troubleshooting Oxygen Sensors Walker Products

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Heated sensors should be inspected or replaced every 60,000 miles. While heated oxygen sensors can be placed in safer locations than unheated models, they are made up of multiple circuits that can in turn allow for electrical issues. If the heater circuit in a sensor goes bad, the sensor will not function properly. Heater circuit issues are in fact a common source of OBDII …

o2 sensor and bad gas mileage | Ford Focus Forum

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· Hello, As a newbie this community has been great to me so far. Thanks for all the help. I''m getting pretty bad gas mileage: 1215 mpg. The Check Engine light comes on and the only code is P1131 "Lack of HO2S Switch Sensor indicates lean". This is really all that is wrong with my car. I...

Can a faulty O2 sensor affect gas mileage? – Mysweetindulgence

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A faulty oxygen sensor can have one of the most detrimental effects on gas mileage. Fuel efficiency losses of up to 40% are not uncommon if your O2 sensor is damaged or malfunctioning. Gas mileage losses can occur with sensors that are just old, worn, and not outputting voltages properly.

8 Main Causes of Bad Gas Mileage CarsDirect

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· Having bad oxygen sensors and air filters can reduce your gas mileage by up to 20%. The oxygen sensors help keep the proper mixture of air and fuel, and having this off balance can be inefficient. The air filters can get clogged and simply need to be unclogged to fix the problem. Air filters need to be cleaned so that the engine can work at its peak …

Can a fuel system additive help to clear my check engine ...

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Answer (1 of 6): This may very temporarily change the firing conditions of the engine and clear the check engine light, however if the O2 sensor is bad or the is bad the problem is just going to come back and very quickly. For an engine misfire, that is going to completely depend on what is …

Can a bad O2 sensor cause poor gas mileage ...

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Can a bad oxygen sensor cause poor gas mileage? Poor Gas Mileage. Depending on the type and/or location of a faulty oxygen sensor, the fueldelivery and the fuelcombustion systems can be thrown off or made irregular by a faulty oxygen sensor. What does the O2 sensor on a car do? One of the most important sensors in modern cars is the oxygen sensor. Also known as …

Why has your automobile had a sudden drop in gas mileage ...

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· Bad gas mileage can occur for a number of reasons, but at the root is your vehicle is not running efficiently. This inefficiency at the very minimum is causing your wallet some distress at the pump as you need to fill up more often, but could be a warning sign of a bigger problem looming. Here are some the main causes for a sudden drop in gas mileage: Bad …

5 Signs Your Oxygen Sensor Is Bad | Oil Filters Online Blog

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· Sudden decrease in fuel mileage. A defective O2 sensor will likely cause your airfuel mixture to be too rich and directly affect your fuel economy. Flashing check engine light or malfunction indicator lamp in the vehicle?s dash board. Of course this can happen for other reasons as well (and a defective oxygen sensor is one of them!)

Will bad O2 sensor affect gas mileage? Answers

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· A bad O2 sensor can affect gas mileage. It is an emissions sensor, so when it goes bad, it does not reflect emissions performance on the car, which could cost a lot in gasoline.

Oxygen Sensors for Fuel Management Systems Are Key

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· But this usually isn’t a factor until the sensor has upward of 75,000 or more miles on it. So when an O2 sensor fails prematurely, the cause is often contamination. Advertisement. Contaminants that can cause an O2 sensor to fail can come from a number of sources. If the engine has an internal coolant leak (due to a crack in the combustion chamber or a leaky head …

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