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Check Engine Light Due to Failed MAF Sensor on Ford Expedition

Problem Description and Possible Solution

The mass air flow sensor (MAF) may fail resulting in a rough engine idle, hesitation on acceleration, and/or engine stalling. The Check Engine Light may or may not illuminate. A failed mass air flow sensor will require replacement.

Problem Data
RepairPal Verified
Average mileage: 151,188 (95,000–280,000)
Engines affected: 4.6L V8, 5.4L V8
12 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2007, 2010
48 people reported this problem
Viewing 1 - 15 of 15 comments
engine sluggish at speeds of 45-55 mph and check engine light on and blinkls constantly.
Rough idle and sometimes would experience intermitant hesitation at ignition and at acceleration. Sometimes would almost stall in traffic when pressing on the gas pedal or would be going 50 mph and the vehicle would begin to jerk as if it couldn't get enough gas and then all of a sudden accelerate.
Rough idle/check engine light/ told to clean with MAF spray - Auto Zone
Check engine (service engine soon)light with rough idle at times. I have been able to get the light to reset by disconnecting negative battery cable to see if it would come back. Took a week for it to show back up the first time. Went to Auto Zone and pulled code. 171 and 174 I think. Do not remember the numbers but the employee said Mass Air Flow Sensor (MAF). $100 for replacement. Had to order. In mean time several videos on you tube. Looks pretty easy and much cheaper than taking it to a shop.
Hesitation on acceleration
Not yet fixed. Newest code.
Code 171 & 174; rough/high idle; not yet fixed.
Problem exactly as written on your site with the MAF.
engine light
need to reaplace air fiow mettersensor
My check engine light is on it has a rough idle has trouble accelerating especially on an incline and I have not fixed it yet
Rough idle sluggish to take off changed multiple plugs and coils code says cam fuse overpower
Rough idling/accelerated hesation
My fan clutch starts to wobble and touch cover over the fan itself.
Replaced the MAF, as the codes said, still runs bad