oldjohnny 176 Report post Posted January 16 Just changed my mass air flow meter. Spannerman says the removed unit is just oiled up slightly. I have Archoil AR6400-D Max cleaner on the magic shelf. Is this suitable for cleaning the air flow unit and is there a procedure for doing this please? Share this post Link to post Share on other sites
JasonH 165 Report post Posted January 16 I bought a new one too. Then cleaned the old one by just liberally spraying it with contact cleaner and letting it run off then dry. You just need to spray the sensor element. After this treatment, using diagnostics I found the MAF was perfect again, so I have a spare new MAF on the shelf.... Share this post Link to post Share on other sites
dj1233 209 Report post Posted January 16 I would use brake cleaner, as it leaves no residue and evaporates away. Share this post Link to post Share on other sites
Keliuss 382 Report post Posted January 16 1 hour ago, oldjohnny said: Just changed my mass air flow meter. Spannerman says the removed unit is just oiled up slightly. I have Archoil AR6400-D Max cleaner on the magic shelf. Is this suitable for cleaning the air flow unit and is there a procedure for doing this please? That's for Turbos, DPFs and CATs. If it was residue free and worked on MAFs I'm pretty sure they would say that too, but don't. Get a MAF specific cleaner. AFAIK a general contact cleaner should work too. Keliuss Share this post Link to post Share on other sites
GoNz0 490 Report post Posted January 16 1 hour ago, JasonH said: I bought a new one too. Then cleaned the old one by just liberally spraying it with contact cleaner and letting it run off then dry. You just need to spray the sensor element. After this treatment, using diagnostics I found the MAF was perfect again, so I have a spare new MAF on the shelf.... Contact cleaner How to kill a good maf m8, hit it with brake cleaner. Share this post Link to post Share on other sites
oldjohnny 176 Report post Posted January 16 Mine is a Bosch so the metering unit does not come out seperately. Do I simply spray into the whole unit and let it dry for future use? Share this post Link to post Share on other sites
GoNz0 490 Report post Posted January 16 Just blast the element. Share this post Link to post Share on other sites
dirtydirtydiesel 116 Report post Posted January 16 I've always used Isopropyl aerosol spray to blast the element clean. But mafs do go out of spec as they wear out. Just be careful as you can damage it by cleaning badly / incorrectly. Share this post Link to post Share on other sites
