I got my truck back from the shop after 3 weeks. When I first got it back the mileage was really good. 17.5 - 18mpg. Interstate driving around 20.5.

I have put 1000 miles on since then and the best I can get on the interstate is 16mpg and all around driving is about 14.5mpg.

I called the dealer they said to wait until it gets about 1500 miles on it and see where it is. There needs to be a re-learn.

I wonder if it is the MAF sensor is bad or if it even has one. Some say no others say yes. I do have what I thought is MAF sensor on my intake tube, but I don't know.

Any help would be great.

 

No that is not a MAF. It only measures Intake Air Temp.

 

Huh? A mass air flow sensor is used to determine the mass flowrate of air.

 

I agree that is what a MAF sensor does, but a 2012 Ecoboost F150 doesn't have one.
Below is a list of sensors that all 2012 F150s have. See what it lists under MAF sensors. The Ecoboost has a wide band that adjusts for rich or lean conditions.



2012 F150 sensors:

• Camshaft Position (CMP) Sensor
• Catalyst Monitor Sensor (CMS)
• Crankshaft Position (CKP) Sensor
• Cylinder Head Temperature (CHT) Sensor
• Fuel Rail Pressure (FRP) Sensor — 3.5L Gasoline Turbocharged Direct Injection (GTDI)
• Heated Oxygen Sensor (HO2S)
• Intake Air Temperature (IAT) Sensor — 3.5L GTDI
• Knock Sensor (KS)
• Manifold Absolute Pressure (MAP) /Intake Air Temperature 2 (IAT2) Sensor — 3.5L GTDI
• Mass Air Flow (MAF) Sensor — 3.7L, 5.0L (4V) and 6.2L (2V)
• PCM
• Turbocharger Boost Pressure (TCBP) /Charge Air Cooler (CAC) Sensor — 3.5L GTDI
• Variable Camshaft Timing (VCT) Oil Control Valve — 3.5L GTDI and 3.7L
• VCT Variable Force Solenoid — 5.0L (4V) and 6.2L (2V)

 

Where did you find this information?

 

Okay, I'm glad this topic came up again because I got all confused last summer and never came to a conclusion so let's try again. When I searched for Ecoboost MAF sensor...

• I've got people showing me a MAF part number from Ford service parts catalog. Entirely legit part numbers.
• I've got people showing me screen shots from the PTS Ford technical website and it doesn't list a MAF. Another legit source.
• I've got people saying what Ford calls a MAF is actually an air temperature sensor, citing examples that proves Ford has a long standing tradition to identify a temp sensor with poorly chosen acronyms.... like MAF.
• I've looked under the hood of my own 2012 and the sensor doesn't look like a MAF sensor to me
• I've got a co-worker that looked under the hood of my same truck and says it is a 4-wire MAF (so we disagree about that LOL!)
• I've got a photo of a 2011 with what looks like a MAF housing near the air filter. This is absent in my 2012.
• I've got aftermarket cold air intake manufactures saying they have intakes for both MAF and MAP style trucks

Why is there so much conflicting information? .
Is that really a 4 wire temp sensor? If so, then the engine controller must require some very accurate temp readings!

Pictures of my 2012 Ecoboost

 

Why do threads always die out when I put up that info? Never seen anybody be able to answer.

 

New on the board, first post. Found this thread doing a google search. While replacing the air filter on my 2014 EB F150 I broke the lock on the harness side of the connector on the very sensor you're trying to identify. I looked up all the numbers on the sensor and didn't find an exact match for any one. There is a commonality of a part of the last number series, 9F479. When googling this I ended up at RockAuto (good parts prices, IMO), which returned part of this number with a part nomenclature 'Manifold Pressure (MAP) Sensor. I looked on Fordparts.com using my VIN (it's a 2014 F150 EB) and the numbers 9F479 and it returned the part, calling it 'Manifold Absolute Pressure Sensor'. So if you go with Fordparts.com, it's a MAP sensor. What I need is the connector on the harness side, that I've still yet to find. It's not the end of the world, it's currently held together with a zip tie. Anyway, for what it's worth, there you go.

edited: Found a Motorcraft repair catalog (MC-PIGTAIL2015A MA20148 Motorcraft® Wiring Sets for Ford and Lincoln Vehicles | The Official Ford Parts Site | FordParts.com ) that lists what looks like every connector and a neat part number index. The one I'm looking for is WPT1231; BU2Z-14S411-ATA. When looking on Fordparts.com it turns up a page of 14S411 but with a page of 14S411's you have to determine the correct suffix. It appears the one I need is 14S411W. Anyway, could well be that this info is already here somewhere and I didn't see it, if so, sorry.