There is no oil pressure in your 1997 ford ranger how do you fix this?
If you indeed have no oil pressure, then the oil pump is
probably bad. But saying that, are you sure you have no pressure?
The oil pressure sending unit can be bad or disconnected. Also the
pressure gage can be bad. An oil pressure test will verify if you
indeed have no pressure. Not sure of the engine size but I know on
a 2.3l the timing belt can be suspect to although rare if the
engine is running ok, and if there is truly no oil pressure you
should hear the lifters banging/ and or bottom end knock.