How to test a maf and not guess.
 

see my MAF data. (Microsoft Excel needed)
http://www.fixkick.com/ELM327/taurus-sim/maf1.xlsx
shows voltage at mAF to ECU and Grams /sec. scans.


I built an ECU test jig. ( for OBD2 developments)
I used the 1996 Ford Taurus , vin U , 3L, 12 OHV engine ECU. (a $10 ecu)
i captured the MAF rules from this ECU, and also covers.
FORD AEROSTAR (1996 - 1997)
FORD ESCORT (1996 - 2001)
FORD RANGER (1995 - 2001)
FORD TAURUS (1996 - 2003)
FORD WINDSTAR (1995 - 1997)
MAZDA B2300 (1995 - 1997)
MAZDA B2500 (1998 - 2001)
MAZDA B3000 (1995 - 1998)
MERCURY SABLE (1996 - 1999)
MERCURY TRACER (1996 - 1999)

my tiny contribution to the ford world. cheers.