Front main seal or timing cover leak.
It can leak from the front seal, or the cooling lines that run to the radiator. Or it could leak from a cracked case.
you have to find where the leak is first.
In front of the fuel tank on the left of the car
You probably need to replace the crankshaft seal
Dirt.
probably a vacuum system leak. Older dodge trucks had the front transaxle engage by a vacuum line. Make sure your pump is working, and that there are no leaks. Then it should engage
fix the leak
Sounds like you have a transmission leak.
The oil pump is inside the engine. For a collision to damage the pump you would have an oil leak.
Right front fender, under the hood. Next to the evap solenoid.
It will all depend on where the leak is.