Ecoboost MAF or No MAF?
04-23-2012, 09:28 PM
#1
Ecoboost MAF or No MAF?
Lets confirm this once and for all. Rick just mentioned that there is no maf on a recent post. Rick can you give us more detail on what sensor is on our intake? Also what's the real difference between the '11 and '12 sensors.
A catback or CAI will not change the tune sine there is a factory wideband and no MAF
04-23-2012, 10:50 PM
#3
F150 Forum
If I understood our tuner correctly, it's a temperature sensor and like the previous EcoBoost vehicles there is a wideband and no MAF. I'm not sure the difference between 2011-12 though, I'll have to ask tomorrow.
Rick
Rick
The following users liked this post:
Cody T (07-12-2019)
04-24-2012, 07:44 AM
#7
ASE Master Auto Tech
From my online Ford manual. Notice where it list engines with mass air, 10th one down.
DESCRIPTION AND OPERATION 3.5 GTDI
DESCRIPTION AND OPERATION 3.5 GTDI
Electronic Engine Controls
The electronic engine controls consist of the following:
•
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)
The CHT sensor:
The CHT sensor:
•
is mounted to the wall of the cylinder head and is not connected to any coolant passages.
•
sends the PCM a signal indicating cylinder head temperature.
The CKP sensor:
The CKP sensor:
•
is mounted to the wall of the cylinder block.
•
sends the PCM a signal indicating crankshaft position and engine speed.
The CMP sensor:
The CMP sensor:
•
is mounted to the cylinder head.
•
sends the PCM a signal indicating camshaft position.
The CMS:
The CMS:
•
is mounted to the catalytic converter.
•
sends the PCM a signal indicating oxygen content in the exhaust after the exhaust leaves the catalytic converter.
The FRP sensor (3.5L GTDI):
The FRP sensor (3.5L GTDI):
•
is mounted to the fuel rail.
•
measures the pressure of the fuel rail and sends these signals to the PCM.
The HO2S:
The HO2S:
•
is mounted to the exhaust Y-pipe.
•
sends the PCM a signal indicating oxygen content in the exhaust before the exhaust enters the catalytic converter.
The IAT sensor (3.5L GTDI):
The IAT sensor (3.5L GTDI):
•
is mounted on the Air Cleaner (ACL).
•
sends the PCM a signal indicating the temperature of the air entering the engine.
The KS:
The KS:
•
is mounted to the wall of the cylinder block.
•
sends a signal to the PCM indicating engine detonation.
Trending Topics
04-24-2012, 07:46 AM
#8
ASE Master Auto Tech
303-14-2 Electronic Engine Controls 303-14-2
2011 F-150, 08/11
• Mass air flow sensor
is mounted on the ACL.
•
sends the PCM a signal indicating mass airflow rate of air entering the engine.
The MAP/IAT2 Sensor (3.5L GTDI):
The MAP/IAT2 Sensor (3.5L GTDI):
•
is mounted on the top of the intake manifold.
•
is a combination sensor.
•
measures manifold pressure and converts it to an electrical signal. This provides the PCM information on engine load.
•
sends the PCM a signal indicating the temperature of the air entering the cylinders after passing through the CAC.
The TCBP/CAC Sensor (3.5L GTDI only):
The TCBP/CAC Sensor (3.5L GTDI only):
•
is mounted to the CAC outlet tube.
•
is a combination sensor.
•
measures turbocharger boost pressure and sends this information to the PCM.
•
measures the temperature of the charge air exiting the CAC and sends this information to the PCM.
04-24-2012, 08:25 AM
#10
Senior Member
Since 3.5L does not have an "EGR System"...it doesn't need a MAF. Instead of the "EGR", the 3.5L uses cam changes to control NOx emissions. Just a thought...
