You either have a blown shock, saggy springs, or a shock mount is broken. This is something you probably should take into a shop as it will affect vehicle control on the road.
3rd from front on driver's side
The Throttle position sensor is monted on the side of the throttle body .
if you have a 5.4 or a 4.6 it is under the intake manifold on the passenger side.
Bank 1 is the passenger side of the engine in your Ford Expedition Sensor 2 is after the catalytic converter ( downstream )
on drivers side at back of engine.
Passenger side near the firewall under the exhaust manifold
where do i find fuse diagram for a 97 ford expedition
The air compressor fuse on the 97-02 expedition should be the 50amp larger fuse under the hood,driver side inner fender.
Bank 1 is the passenger side of the engine on a Ford Expedition Sensor 2 is in the exhaust after it has passed through the catalytic converter ( downstream )
Check for leaks on the air lines. Or holes in air bags
How to apply the amplifier to my expedition
No such thing. Expedition came out in 97.