Intake manifold gasket may be leaking - check for loose bolts or replace fasket.
its to the rear of engine under the intake manifold
underneath the intake manifold on the drivers side
Try cleaning the Intake Manifold where the EGR valve is attached.
It is located on the intake manifold next to the fuel rail.
F150 lighning's have a supercharged 5.4L motor, regular F150's do not, unless there is aftermarket work done. Non-supercharged 5.4's can be converted to supercharged, but there is quite a bit of work involved.
on top of the spark plugs in the intake manifold.
It is bolted to the back of the aluminum intake that is connected to the block. Its location is behind the plenum.
Not enless it is damaged during removal
what eng. do you have? if it is a 5.4 or a 4.6 it is under the intake manifold on the passenger side.
it's on the intake manifold.
The sensor is in the intake manifold (MFI engines) or air cleaner/tube (SFI engines).