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Buy the new sensor and it comes with instructions. The tricky part is finding it. On a forester its located on the up pipe manifold. Since that's a boxer engine, the mainfold is low, you have to get under the car. A bosch O2 sensor has a nice detail set of instructions for replacement.
Location varies with model of Subaru, but most are installed just upstream (towards the engine) from the catalytic converter located under the right hand drive shaft. Mike is correct-- you must get under the car to replace. Make sure you follow safety and use a good set of car ramps on level solid ground to raise the car, or use jack stands. Best to work on a cool engine/car. Unplug the wire leading from the O2 sensor, then unscrew the sensor to remove. The old one may be stuck quite well, but it unscrews like a spark plug. When installing the new one, avoid getting dirt, grease (or anti-sieze) on the sensing tip of the new unit, and just screw back in. It will turn easily for a few turns, then turn harder for about 1/2 turn, then it just stops turning. You have compressed the sealing washer correctly. Remove your wrench, plug the new sensor back in, and lower the car. Do not be surprised if the computer is a bit confused for the first 20 minutes of driving-- it will be re-learning the correct new oxygen sensor.
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What is the function of oxygen sensor in subaru?
The function of the oxygen sensor in a Subaru or any other car is to measure the amount of oxygen that is mixed with exhaust gases.
What happens in subaru with faulty oxygen sensor?
When a Subaru has a faulty O2 sensor the fuel management is out of whack.
What is Code 32 on a Subaru?
The code 32 for a Subaru vehicle is for the coolant sensor or the oxygen circuit.
How do you bypass an oxygen sensor on a 2006 subaru wrx tr?
You cannot bypass this sensor.
How do you replace oxygen sensor in Honda Odyssey?
To replace the oxygen sensor on a Honda Odyssey, first unscrew the sensor. Then use a 22 mm socket or 7/8 inch wrench to replace the oxygen sensor.
How to replace oxygen sensor on a 2002 ford explorer xlt?
To replace the oxygen sensor disconnect the oxygen sensor electrical connector. Use an oxygen sensor socket to remove the sensor. spray the sensor with penetration oil if it is difficult to loosen. install in reverse.
How do you reset the oxygen sensor?
An Oxygen sensor does not reset. You have to replace them and yes they are expensive.
Can oxygen sensors affect gas mileage on 2003 Subaru Forester?
Absolutely. Not just on Subaru but every car built that has an oxygen sensor. And they all do.
How do you replace oxygen sensor of 1992 BMW 318?
how do you replace oxygen sensor of 2001 bmw 318 ci es
How do you replace the oxygen sensor on a 1994 Chevrolet Astro van?
You bring it to a service station and tell them to replace the oxygen sensor.
How to replace 1999 Subaru Outback oxygen sensor?
Unplug sensor--- sometimes you can get a wrench on the sensor if not you will have to purchase the special socket.Genuine parts are often high so you can get the sensor at an auto store directions are included with the sensor as how to attach the pigtail and ude the heat shrink tubing suppied
What is 1997 Subaru O2 heater?
Probably referring to a heated oxygen sensor.
