I've seen on this board that a dirty MAF sensor may be one of the contributing factors to the pinging in the 4.6's. I've seen the suggestion that one should carefully clean the filament with a q-tip and a bit of windex. My question is whether or not there are any risks to this procedure and whether or not there are any alternative methods. Thanks.

 

I was told by a mechanic that the MAF sensor is self cleaning. He told me that the filament heats up for a very brief period of time after the engine is shut off to clean itself. Take it for what you will.

 

Pro-M's website confirms the windex and pipe cleaner.

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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
Class III tow/Payload #3/Convenience pkgs.,
4-wheel disc/ABS,Chestnut/Parchment 40/60,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.

 

Roden.......It was me that made that post. My Ford mechanic took the left half of the air box out of the mount and used a special tool to remove the MAF from the housing, then sprayed it with carb cleaner. Then a little air to dry it....reinstall and you are done.

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97 F-150 4.6 auto, 4x2, 3.55 LS, WMS Velocity tube, K&N, Dynomax Super Turbo exhaust with Echo tube.
Oh yeah, it's Oxford White with crome wheels, Legacy shell & custom grill!

 

scroll down this page to learn how. It is from a 4.0L but it is all the same for Ford engines.
http://www.glue.umd.edu/~singletn/web/pages/ping.html

 

I and a friend with an F250LD have bothused the carb cleaner but not removed the maf. Just shot the stuff up into the air tube.



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97 F-150, 2WD, Reg Cab,Flareside,Dk Toreador Red, Windsor 4.6, Magnecor 8.5mm wires, Bosch Plat +4s, 3.55 LS, EGR Bug Deflector, ******* Bed Cover, Bed Liner, XL Full Length Running Boards, Air Aid Kit, Gibson Single Out Cat Back, Superchips, TransGo Shift Kit, Hellwig Rear Sway Bar, Hellwig 2500# Overload Springs,Energy Suspension Polyurethane Front Sway Bar Bushings