maf cleaning

Brett Dikeman brett at
Mon Feb 25 05:40:24 EST 2002

At 12:27 AM -0500 2/25/02, Chris Covington wrote:
>Rumor has it that my 1.0+ bar boost bucking problem could be a dirty MAF
>corrupted by my K&N panel filter.  Could someone describe how to "clean"
>the MAF, or do I potentially need a new one?

They can't be cleaned, unless the buildup is recent.

Why?  Because each time you shut off the car, the thing heats the
wire up to may hundreds of degrees, burning any residue.

Note I didn't say burning OFF any residue.

The majority of oil, dust, etc may get vaporized, but enough gets
left behind.  Someone(Brandon, I think) sent me a toasted MAF sensor
once, and I looked it over to see if in fact it could be cleaned.

I tried 6 different solvents/cleaners with a q-tip and was able only
to get a slight residue removed from the wire.

A MAF sensor failure would be fairly exotic.  I would look for an
intake system leak, such a loose hose clamp, or a busted Samco
hose(yes, I think that split is all the way through.)

Given your comments about the Samco hose, that's the first place I
would look.  Basically, 1.0bar indicated is a lot more(probably
around 1.2-1.3) on a chipped car w/different pressure sensor.  .8
displayed = 1.0 Bar real-life. The shuddering is caused by the
flapping of the split or loose hose.  The hose is doing a "motorboat"
and thus you get the shuddering as that metered air escapes.

"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin

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