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Old 06-22-2007, 09:46 AM   #13
MNBoxster
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Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
Hi,

A dirty MAF is only one possibility. The other is that the MAF has failed (which also is the case in a high % of these CELs).

If dirty, a thorough cleaning (read THOROUGH) can loosen the dirt/oil accumulations and everything will work as new. It's generally a good idea to do several sprays with the Cleaner, as each successive spraying removes some more of the dirt from the Hot Film. If you just spray it once, or not thoroughly, the solvent will flash-off and redeposit the dirt/oil in it's place, the idea is to flush the bad stuff away.

Many who have attempted to clean the MAF and were unsuccessful I suspect either had a Failed MAF (in which case cleaning won't do a thing), or didn't thoroughly clean it.

You can hook a multimeter to it and see what readings you get. There is a specific voltage range for a MAF which is still serviceable. If outside this range, replace the MAF. Hope this helps...

Happy Motoring!... Jim'99
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