Yaris MAF cleaner

[2bz]

Originally Posted by dogsridewith

Doesn't the MAF sensor have to survive everything gaseous coming up from the crankcase and through under the valve cover?

No. The MAF is before the intersection where the crank case gases enter..

[dogsridewith]

Originally Posted by 2bz

No. The MAF is before the intersection where the crank case gases enter..

Then what gets it dirty?

[WeeYari]

Originally Posted by dogsridewith

Then what gets it dirty?

There are still fine particulates that get through an air filter. This very slowly over time accumulates on the fine wire in the maf.

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[2bz]

Originally Posted by WeeYari

There are still fine particulates that get through an air filter. This very slowly over time accumulates on the fine wire in the maf.

Sent from my EML-L09 using Tapatalk

Also, depending upon the MAF design one wire is heated, like a toaster element and can burn said particulates, which stick to it. This is why you don't want to clean the MAF with anything that leaves a residue. It will burn on too and give incorrect data.