OMG MY K&N FILTER!!!

[ChinoCharles]

Originally Posted by ddongbap

Not that I'm trying to disprove this or anything, then what causes brand new MAFs to fail?

Poor design. MAF circuit boards are sealed w/ silicon, and they are connected directly to the underlying hardware. Engine heat and general wear and tear can cause the plastics of a MAF sensor to degrade and allow some of that silicon to coat the thermistors and other good bits. This is usually the cause of "dirty" sensors... it actually comes from the sensor itself.

[Tamago]

Originally Posted by ChinoCharles

Poor design. MAF circuit boards are sealed w/ silicon, and they are connected directly to the underlying hardware. Engine heat and general wear and tear can cause the plastics of a MAF sensor to degrade and allow some of that silicon to coat the thermistors and other good bits. This is usually the cause of "dirty" sensors... it actually comes from the sensor itself.

they also do not react very well to voltage destabilization. lots of improper wiring or a loud sound system will kill a MAF pretty quickly. i saw at least 3 MAF's replaced in a few months while at toyota, all on cars with ghetto-rigged wiring