Eight

Does it make any difference? Read some where that we could use a Permatex electrical contact cleaner. Wanted to share your opinions/suggestions before I attempt it.

gondar

Yes, and no difference noted using VagCom. Didn't hurt and didn't help. It might be worth checking to see if there is a fuzzy somehow stuck inside the snout but I don't think they clean up. I tried a variety of solvents including one you can drink (at a frat party). Just replaced the MAS on wife's @#$%^ Mercedes and I didn't bother to try to clean it. These things fail left and right and are huge money makers for dealers because they can be changed so quickly. Once upon a time this part was covered by the Federal 7/70K emmissions warranty and the law needs to be changed back. I doubt the Bosch production cost is over $15.

A8CT

I've done this on my BMW and Lexus with great results (smoother idle). Have not on A8 though

ttuling

It continued to underreport and turn on the check engine light after an isopropyl alcohol bath.

Tom

KaMaKaZieP -ALUMIN8-

there is something called a thermister in the MAF that detects thermal resistance. Could this be the item that goes bad after time? This was the issue with the 00+ A4's

GDJT Allroad^2

In the GM world (which also uses Bosch MAFs) they have a MAF burn-off; a heating element which will turn on and burn off any crud on the MAF. I think this happens when you shut the car off, but I'm not sure on the timing. After a little google I found <a href="http://www.gatewaycleanair.com/mechanic/air4_4/dirtymaf.htm">this article</a> that says we may not have burn-off which is why our stuff can get contaminated.

tozoM8

Alcohol bath. Oh yeah

PaulW

Interesting article.

CA_A8

I tried it, but ended up replacing the MAF anyway..

http://www.m5board.com/vbulletin/archive/index.php/t-34647