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causes very poor gas mileage

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Q: Does a bad oxygen sensor really affect performance?
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How can an oxygen sensor affect the performance of a 1988 ford ranger?

sending wrong fuel ratio mix

How much does the co2 sensor affect the performance of the motor?

co2 sensor?

How do you know when oxygen sensor is bad?

An oxygen sensor is bad when it is no longer performing inside a set of parameters that are designated and optimal. The oxygen operates in a very narrow window of voltage and provides feedback to the engine to adjust the air/fuel ratio to maintain performance and emissions. If the sensor is bad and returning poor data, the performance, emissions and mileage will suffer.

How do you know if your oxygen sensor still good?

Go by the miles travelled. Refer to the owners manual for the replacment schedule. A new oxygen sensor will give you better fuel economy and performance.

Code P0155 2001 gmc 2500 hd?

Upstream Oxygen Sensor heater performance. That will be the first oxygen sensor in the exhaust pipe ( closest to the engine ) on the passenger side head. You need to check the wireing connector that hooks to the oxygen sensor for a broken wire are bad connection. If you find no problems, then replace oxygen sensor.

Does the oxygen sensor affect fuel mileage on a 1994 Chevy pickup?

Yes it will.

Will bad O2 sensor affect gas mileage?

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.

How do fuel level sensors affect engine performance?

A fuel level sensor will not affect performance. Fuel level can due to weight of fuel and accumulated heat in the returned fuel from the engine.

Where is oxygen sensor performance bank 2 sensor 1 located in a 1999 cadillac catera?

Just in front of the Cat converter, drivers side.

Where is the oxygen sensor location for a 98 Chevy k1500 truck?

The oxygen sensor on a 98 Chevy K1500 truck is located in the exhaust manifolds. It monitors oxygen levels in the exhaust gases and allows the computer to make adjustments for optimal performance.

Does old oxygen sensor effect gas mileage?

If it is malfunctioning it can affect fuel mileage.

What will happen if you disconnect the map sensor?

It will make the air/fuel ratio be off and affect performance and emissions