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It seems to on mine also makes it run like crap at first i thought it might be the iac but i took it and had the code read they said al the stuff going on with the car is probably the sensor being bad

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Q: Does a bad oxygen sensors effect the idling?
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When to change oxygen sensors?

ONLY when they go bad. Not untill.


What controls the converter on a 1999 escort?

The oxygen sensors control the amount fuel in the engine and if it is making too many emissions the oxygen sensors will cut back on the fuel or if they are worn out they will increase the amount of fuel. The catalytic converter will eventually get plugged up if the Oxygen sensors are bad. The oxygen sensors control the converter.


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How you can test the oxygen sensors?

There really isn't any way to test the oxygen sensor to see if it is good or bad. If your check engine light is on you can take it to Autozone and they will hook it up to computer and if the oxygen sensor is bad, the computer will detect it.


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