Einleitung
One item that commonly breaks in modern cars is the oxygen, or O2, sensor. When they go bad, it can lead to rough idle, and if ignored, will leave motorists stranded. It is very easily diagnosed by a trouble code or check engine light. Many auto parts store will scan cars for free, and the code provided will indicate if there is a bad O2 sensor, as well as many other possible issues.
This fix will involve finding the sensor, unplugging it, unthreading it, and reinstalling a new sensor in its place.
Reminder: Engine bays are usually very dirty so a pair of work gloves or even non latex style medical gloves can make clean up easier. Thinner gloves are better for dexterity since there is a small plug to manipulate.
Reminder: More lighting is never a bad thing. Headlights, a friend holding a flashlight, or magnetic lights, while not a requirement, will definitely help.
Werkzeuge
Ersatzteile
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Use a 10 mm wrench to loosen bolt on the battery's negative (-) cable, then slide it off the (-) negative post.
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Locate the sensor off the exhaust header and follow the wire up to the connector.
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Gently work the connector out of the bracket, then disconnect it by pressing the tab inward then pulling out.
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Place the 7/8" (22 mm) socket around the O2 sensor. Use a ratchet and 6" extension to loosen and remove the sensor.
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Place the socket on the sensor without the ratchet in the way. Once the socket is in place, reattach the ratchet and loosen.
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The sensor can now be unthreaded by hand.
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Use the 7/8" (22 mm) socket to tighten the sensor firmly so it doesn't loosen from vibration.
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Reconnect the plug by firmly pushing the plugs together.
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Push the connector back into its bracket.
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Push the wires back into the metal brackets.
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Your O2 sensor should be installed and good-to-go!
