Use the sensor socket to tighten the O2 sensor to three-quarters turn past finger-tight, depending on the manufacturer's recommendation. Finally, reroute the wire and attach the connector.

Oxygen sensors are a vital component for the proper functioning of vehicles, as they enable the engine to get the fuel-air mixture. Over time, oxygen sensors may become unresponsive or faulty and ...

An oxygen sensor that’s going bad or has failed altogether won’t always throw a check engine light or trip a diagnostic trouble code. Sometimes if there’s an internal problem with the O2 ...

See if a specialized oxygen sensor socket helps. And you might look at this Saturday Mechanic story on oxygen sensors we did while ago. Oh, by the way: never clean an oxygen sensor.

There's a special O2 sensor socket that should be used, and you have to be certain of the sensor location. On the 4.7-liter V-8, there are four oxygen sensors.

One of the most common reasons your check engine light comes on is a faulty oxygen sensor. Here's how to detect problems with the sensors and how to fix them.