3 oxy sensors on the A6. long time ago, over 2 weeks, when I was still driving the 90 5000, a generic Oxy sensor was suggested by SMJ Autotechnic.
Is it possible that generics are available for the '97 A6.The 3 are pricey, and each seperately is.

Cheers,

george

 

where are the oxygen sensors located on a 99 A6Q2.8 ? when do they need replacing?

 

you can buy them
http://images.google.co.uk/images?gb...rs&spell=1
and the pictures show you what your looking at so simple to find in the exhaust system

 

AFStud,

Haven't looked myself, SJM says one before the cat, one on each pipe after.

If you get under the car, going to be hard to miss. Biggish hex sticking out of the pipes, with wires coming out of them.

Cheers,

George

 

Upper ones are a bit harderto see. To replace them, it is easier to remove the coolant tank and intake air box andconnector. Long extension and crows footare a must.