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How to replace O2 Sensor?

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Old 05-05-2009, 05:05 PM
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Default How to replace O2 Sensor?

I have a 03 Audi 3.0

- I need to replace the O2 sensor

How hard is that to replace?
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Old 05-05-2009, 05:22 PM
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Default Re: How to replace O2 Sensor?

There are 4x O2 Sensor's on the 3.0L

When inspecting, the two that you can easily see behind the heads are the rear sensors and they're not hard to change, the front two sensors are not even visible without a mirror as they are tucked under the rear of the heads. The forward two most visible in this pic are most difficult to change with engine in.

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Last edited by K04-S4; 05-05-2009 at 06:32 PM.
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Old 05-05-2009, 06:13 PM
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Default Re: How to replace O2 Sensor?

wow...that looks like a lot of work..
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Old 05-05-2009, 06:25 PM
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Default Re: How to replace O2 Sensor?

Consider replacing high mileage front O2's if 3.0L is pulled, otherwise it's several hours per front O2.

Last edited by K04-S4; 05-05-2009 at 06:39 PM.
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Old 05-05-2009, 06:28 PM
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Default Re: How to replace O2 Sensor?

labor cost will kill my wallet on this...
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Old 05-05-2009, 06:37 PM
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Default Re: How to replace O2 Sensor?

At the Dealer... Likely

Find a Good Shop!
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