Oxygen Sensor-Replacement

[msharifi]

Hi Everyone,

As i was telling everyone about how bad my MPG was. The only thing I could have think that might have been bad was the oxygen sensor. I replace it Saturday.

It wasn't hard and I used a oxygen sensor socket but you I could have used a 22MM wrench but didn't have one.

the only hard part I would say was to get the cable out since it was zip tie on the tightest area and made sure I dont cut any cables :)

I have noticed more power/imporove on acceleration and MPG.

I will fully report since I drive around on a full tank since I log my fill ups.

The picture is how the old sensor looked like. It has like a white powder on it and not sure if it means anything.

[Papachristou]

which sensor did u replace? i too am seeing low mileage and havve a rear o2 fault code but its my understanding the front is the only important one.. im trying to wait till i throw a BT on!

[Gondi Stylez]

^^ same (minus installing a BT)

[msharifi]

I replaced the First sensor before the CAT. I do see feel some improvement. The second Sensor afer CAT only checks to see if the CAT is working. What error codes you get?

Mine didn't give me any error codes but since I was getting really poor MPG I heard at times the sensor gets lazy to work.. I bought a OEM one for $122.

[Papachristou]

audi told me $200 for the rear and another $200 for the rear

[msharifi]

audi told me $200 for the rear and another $200 for the rear

Here I got it for $122 check it out

http://www.mjmautohaus.com/catalog/i...6170_6187_6190

[lucas.dargis]

I'm having the same MPG problem. did changing the o2 sensor help?

what were you getting, what are you getting now? (MPG)