Oxygen Sensor Where Oh Where?


Old 10-17-05, 05:58 PM
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Oxygen Sensor Where Oh Where?

Has anybody here ever replaced an oxygen sensor on an Audi (1984-87) 5 cylinder Quattro? I know it's supposed to be on the manifold, but, where exactly is it? How did you access it to replace it?
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Old 10-17-05, 08:33 PM
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I can't give you an exact location, but it will be before the catalytic converter.

When the exhaust is COLD, you can find it by feel if you can't see it.

A 7/8" or 22 mm should do the trick. If there's room a combination wrench will work. Sometimes a socket or special O2 sensor socket designed for the task is needed.


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