I"m having the fluctuating speed issue that others have reported at around 40MPH - that is, the tranny hunts up and down as the revs go up and down. I'm interested in trying to clean or replace the MAF sensors as suggested (I also got a VAG/COM code for the O2 sensor so I'd like to locate that as well).

So, can anyone tell me where the MAF sensors are and what they look like? Can anyone recomend a cleaning method?

'99 4.2L A8 Quattro

TIA!


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The MAF sensor is inside the air cleaner box (pass side of engine). You can try cleaning the filament with some rubbing alcohol. The pre cat 02 sensors (probably the ones that are giving the code) are on each side pipe coming out of the manifold. The Pass is not EZ to see, the drivers side you can see under the hood.

Follow the connectors/wires on the firewall if you need to. They're EZ to spot...

Bob

 

Thanks, I'll give it a shot!