On the 4.0 L OHV engine, the DPFE sensor is located on the driver's side of the engine. It is mounted on the side of the upper "plastic" intake manifold, directly below the idle air control valve. It is a small rectangular box with an electrical plug in connection on the front and 2 vacuum hoses connecting to the bottom. Originally they were made of metal, but I believe they are a plastic body now.
Bank 2 is the drivers side of the engine in your Ford Explorer Sensor 2 is after the catalytic converter ( downstream )
Its integrated into the MAF sensor as of 1998.
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The door ajar switch is located on the backside of the door latch assembly, and is accessed inside the door by removing the door trim panel.
On my 2001 sport trac it is behjnd the backseat on the module
the Intake Air Temperature (IAT) sensor is located in the air cleaner to throttle body supply tube ( big rubber tube ) close to the engine throttle body.
On a 2001 Ford Explorer : The Mass Air Flow sensor is located between the engine air filter housing and the large diameter engine air intake tube
Most of the explorer has the fuel pump in side of the gas tank.
In the Power Distribution Box ( which is " live ) located in the engine compartment on the drivers side Location ( # 53 ) is the PCM diode on a 2001 Ford Explorer Sport
The intake air temperature sensor is connected to the mass airflow sensor as one unit, it's at the beginning of the air intake tube just after the air cleaner. The sensor with six wires running out of it
The height for that 2001 Ford Explorer Sport is 68.2 inches.
The starter solenoid is mounted directly to the starter.