Maf Sensor
Senior Member
Joined: Oct 2020
Posts: 1,958
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From: Brandywine Md
what about my 2019 3rd generation 5.0 for a mas air flow. I noticed a device on the air cleaner housing that has a plug and wires attached. What is that? Some kind of air filter sensor? Or a MAF sensor?
5 Year Member
Joined: Nov 2018
Posts: 6,713
Likes: 3,931
From: Calgary, Alberta
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Cleaning sensors is pretty easy. In this video I unfortunately interchange the terms MAP and MAF but the concept is the same.
https://youtu.be/114kLkdPYts
Last edited by A/Ox4; May 15, 2021 at 09:03 PM.
Senior Member
Joined: Mar 2021
Posts: 4,789
Likes: 2,390
The MAP sensor for 5L is located on the bottom of intake manifold.
You can't get to it without removing the intake manifold.
There is nothing to really clean on that kind of sensor. Looking at it's output to see if it works as expected is the first thing to do for a suspected issue.
Last Ford truck I had with a MAP sensor was a 1985 F150.
A Map sensor measures the intake tract vacuum/pressure level below atmospheric level; transforms it into a digital signal the computer can use.
Along with throttle angle as a separate input to the computer.
Along with intake tract temperature sensor, and coolant sensor, RPM, calculation of fuel, ignition timing, plus VCT action and when to shift the transmission up or down.
The computer variable tables are updated during de-celeration when the computer has the 'least' to keep track of.
MAP control is truly operating the motor as a 'speed density' programmed system as opposed to Mass Air system.
More than you asked but there it is.
Good luck.
You can't get to it without removing the intake manifold.
There is nothing to really clean on that kind of sensor. Looking at it's output to see if it works as expected is the first thing to do for a suspected issue.
Last Ford truck I had with a MAP sensor was a 1985 F150.
A Map sensor measures the intake tract vacuum/pressure level below atmospheric level; transforms it into a digital signal the computer can use.
Along with throttle angle as a separate input to the computer.
Along with intake tract temperature sensor, and coolant sensor, RPM, calculation of fuel, ignition timing, plus VCT action and when to shift the transmission up or down.
The computer variable tables are updated during de-celeration when the computer has the 'least' to keep track of.
MAP control is truly operating the motor as a 'speed density' programmed system as opposed to Mass Air system.
More than you asked but there it is.
Good luck.
5 Year Member
Joined: Nov 2018
Posts: 6,713
Likes: 3,931
From: Calgary, Alberta
The MAP sensor for 5L is located on the bottom of intake manifold.
You can't get to it without removing the intake manifold.
There is nothing to really clean on that kind of sensor. Looking at it's output to see if it works as expected is the first thing to do for a suspected issue.
Last Ford truck I had with a MAP sensor was a 1985 F150.
A Map sensor measures the intake tract vacuum/pressure level below atmospheric level; transforms it into a digital signal the computer can use.
Along with throttle angle as a separate input to the computer.
Along with intake tract temperature sensor, and coolant sensor, RPM, calculation of fuel, ignition timing, plus VCT action and when to shift the transmission up or down.
The computer variable tables are updated during de-celeration when the computer has the 'least' to keep track of.
MAP control is truly operating the motor as a 'speed density' programmed system as opposed to Mass Air system.
More than you asked but there it is.
Good luck.
You can't get to it without removing the intake manifold.
There is nothing to really clean on that kind of sensor. Looking at it's output to see if it works as expected is the first thing to do for a suspected issue.
Last Ford truck I had with a MAP sensor was a 1985 F150.
A Map sensor measures the intake tract vacuum/pressure level below atmospheric level; transforms it into a digital signal the computer can use.
Along with throttle angle as a separate input to the computer.
Along with intake tract temperature sensor, and coolant sensor, RPM, calculation of fuel, ignition timing, plus VCT action and when to shift the transmission up or down.
The computer variable tables are updated during de-celeration when the computer has the 'least' to keep track of.
MAP control is truly operating the motor as a 'speed density' programmed system as opposed to Mass Air system.
More than you asked but there it is.
Good luck.