if you had a code problem po446 , we just fixed that problem on our Ford Explorer. po446 evapis the sensor located beside your charcoal canister which is located above the spare tire.
Johnny Adds this;The Mass Air Flow Sensor is between
the Air-Filter housing and the Air Intake manifold
on the Ford Explorer Sport 1999.
Open Engine Hood. Left Front Side.
Most important sensor but prone to contamination.
MANY FORUMS have postings on how to clean (non contact methods only)
you can see it to the right of this picture (the air filter shown is NOT stock,
its for off-road performance)
http://media.Photobucket.com/image/ford%20explorer%20sport%201999%20MAF%20sensor/ka4x4turbo/05032008.jpg
You will need a special "security torx" screwdriver BIT which is available in a kit
at $5 from HarbourFreightTools, the torx has a hole in the center
dont touch nor wipe the sensor wire (s)
you can buy cleaners in aerosol form, or you can use compressed air can
Like your PVC replacement, its a little known fact
that cleaning MAF dirt (if it exists)
will immediately improve gas consumption
On your 1998 Ford Explorer Sport : The mass air flow sensor is between your engine air filter and the big rubber engine air intake tube
The Mass Air Flow sensor is located on top of the air filter housing on Ford Explorer.
The MAF sensor is always located in the ductwork between the air filter box and the throttle body.
On a 1998 Ford Explorer : The Mass Air Flow Sensor is between the engine air filter and the big engine air intake tube
its located in your MAF on the air intake ========================================================== The Mass Air Flow sensor is located between the engine air filter housing and the engine air intake tube on your 2004 Ford Explorer Sport Trac
On a 1998 Ford Explorer : The mass air flow sensor is between the engine air filter and the big rubber engine air intake tube
On a 2002 Ford Explorer : The Mass Air Flow sensor is between the top section of the engine air filter housing and the engine air intake tube
On a 2001 Ford Explorer : The Mass Air Flow sensor is located between the engine air filter housing and the large diameter engine air intake tube
On a 1994 Ford Explorer : The Mass Air Flow sensor is located between the top section of the engine air filter housing and the engine air intake tube
Between the engine air filter housing and the big rubber engine air intake tube
On a 1992 Ford Explorer : The Mass Air Flow sensor is located between the top section of the engine air filter housing and the big rubber engine air intake tube
On a 2002 Ford Explorer : The Mass Air Flow sensor is between the top of the engine air filter housing and the big engine air intake tube