O2 Sensor?

Question

Is an O2 sensor part of a muffler? What is it?

Answer 1

Not really. But a muffler is part of your exhaust system (which includes other pieces of equipment as well such as the exhaust manifold, some pipes, and catalytic converter) and the O2 sensor(s) are usually mounted somewhere along the exhaust system--but never in the muffler. The O2 sensor is part of your emissions control system, and reads the quality of the exhaust coming out of the engine. If the exhaust has alot of unburnt fuel or pollution, the O2 sensor helps your car figure that out, and your car's engine management system would try to adjust. The catalytic converter is a piece of exhaust equipment that's supposed to reduce pollution. Many companies place multiple O2 sensors in their cars--one before the catalytic converter in the exhaust manifold, and another one after the catalytic converter, so you could actually see what kind of effect your catalytic converter is having. And in some cars, the function of the catalytic converter is divided into two pieces--the cat (short for catalytic converter) and the pre-cat. Then, you'd usually find another O2 sensor in between the cat and pre-cat. These engineers sure do like to measure things.

Physically, an O2 sensor looks a little like a weird spark plug with a wire sticking out of it. Like a spark plug, it's small, and threaded along its side and has an area that's shaped like a bolt so that you can use a wrench to screw it into a threaded port somewhere along the exhaust. The sensing element is usually at the end, and covered in a round mesh metal dome so that it's protected, but air can pass through. That's the part that sticks into the path of exhaust gases. And on the other end of it, you have a wire, ending in an electrical connector. The O2 sensor essentially gets an electrical current of a particular voltage strength from the computer through the wire and changes the strength of the signal returning back to the computer according to what the sensor feels. The computer interprets this return signal as a measurement of oxygen in the exhaust.

Neat, huh?

Answer 2

An oxygen sensor (or lambda sensor) is an electronic device that measures the proportion of oxygen (O2) in the gas or liquid being analysed.

It was developed by the Robert Bosch GmbH company during the late 1960s under the supervision of Dr. Günter Bauman. The original sensing element is made with a thimble-shaped zirconia ceramic coated on both the exhaust and reference sides with a thin layer of platinum and comes in both heated and unheated forms. The planar-style sensor entered the market in 1990, and significantly reduced the mass of the ceramic sensing element as well as incorporating the heater within the ceramic structure. This resulted in a sensor that started sooner and responded faster.

The most common application is to measure the exhaust gas concentration of oxygen for internal combustion engines in automobiles and other vehicles. Divers also use a similar device to measure the partial pressure of oxygen in their breathing gas.

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Answer 3

The O2 sensor is connected to the exhaust system, one before and one after (1996 and up) each catalytic converter.

Answer 4

It is located on the exhaust system near the engine before the catalytic converter. The device senses the amount of oxygen in the exhaust gases. It transmits the information to the computer which determines the amount of fuel and air to mix in order to maintain an acceptable oxygen level in the exhaust.

Answer 5

the o2 censer is part of your air gas mix most times it is found near the thermostat call a dealer of your car make and ask them where it is located

Answer 6

No,it's a part of the intake manifold.It tells your car's computer about proper gas/oxygen mixture.

Answer 7

its on the front of the engine...its somewhat easy to put in.