Quote:
Originally Posted by stevenbrick
I thought MAF stood for Mass Air Flow sensor but I guess I should have said AFM for Air Flow Meter? Sorry for confusion!
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Correct; our Toyota's (well, 22re's and 3.0's anyway) have a mechanical meter, as you have probably already found out, giving it the "Air Flow Meter", or AFM, name. They have a trap door that opens and moves depending out how much air is flowing through. The more air moving through it, the farther it opens. Under that little black lid on the top of the AFM are the electronics that measure how far that trap door's opening, and sends the info to the computer.
The flow through type found on most newer models, most simply called "Mass Air Flow" sensor, or MAF, have just a sencor that sits directly in the flow of air, and measures the amount of passing air that way. It causes less restriction in the air flow, and there's no moving parts so there's less to break.
Ironically though, both are pretty pricy to replace
let us know how it turns out!