Hey all,

I have a 2015 F150 XLT 5.0 that has the condenser fans kick on immediately when the truck starts and doesn't stop. I've serviced the A/C and coolant to rule that out. There's currently no codes. I looked at the live data through BlueDriver and the Air Intake Temperature is reading 90 degrees. It's currently 27 where I live. Therefore, does anyone know where the sensor is on the 5.0? Is it in conjunction with the MAF? Any help would be appreciated.

Thanns

 

There is no MAF. There is a MAPT (Manifold Absolute Pressure - Temperature) sensor however. Ford now uses Speed Density in most of its vehicles rather than Mass Air Flow for calculating fuel injecton rates.

It is located under the intake manifold and the manifold has to be removed in order to get at the MAPT.

 

I'm not sure if this helps, but I have a 2015 5.0 also with a plow that I bought new. While driving down the road with the plow on, the outside air temp would sometimes read over 130 because the plow would cause the hot air to be pulled out from the radiator. I didn't care at first because I figured it was only affecting the air temp reading, but then one day the check engine came on. I took it to the dealer and they said the computer uses the same outside air sensor for intake temp. They ended up adding a second sensor on the plow that I had to plug in and unplug the original when I connected the plow. The original sensor is located above the grill right next to the hood latch.

 

Update: The truck is acting extremely fickle. I blew a heater hose on a road trip and got it replaced. However, before the heater hose blew the fans were still running on high only when the AC was turned on. Is this more of an AC problem or coolant/ possible thermostat problem?

 

At cold start, Ambient, Intake, Cylinder Head, Cats and Trans temps are all looked at for being within about 10% as a starting point and system test.
There is a Fan Control Matrix that should be consulted to see what conditions control how many Fans and when for trouble shooting.
It's a relay system of control.
Do the homework first before diving into it.
These can all be seen with a good Scanner looking at the PIDs.
There might be an A/C issue involved.
Good luck.