There is no hose, just an opening at the bottom of the A/C-heater box.
Bottom of the oil pan.
The engine computer is the voltage regulator on a 1991 Dodge.
Yes.
voltage regulator is part of the engine computer
A Dodge B250 Van does not have a mass airflow sensor.
I have a 1989 Dodge B250...it has overdrive
No.
No.
Center of the firewall.
To drain the fuel tank on a 1994 Dodge B250 van, first ensure the vehicle is in a well-ventilated area and disconnect the negative battery cable for safety. Remove the fuel pump relay from the fuse box, start the engine, and let it run until it stalls to relieve fuel pressure. Then, locate the fuel tank's drain plug (if equipped) or remove the fuel line at the tank to drain the fuel. If necessary, you can also lower the tank to access the fuel sender unit for manual draining.
Yes
check the coil , and ecm and all connections