which engine? diesel or gas?
for efi use fuel pressure gauge and adaptor at the fuel rail, more than likely the driver side of engine
With an OBD2 scan tool.
Look at the top of the engine at the rear center
The question should read 1989 Ford F250 7.4 liter engine...Location of Oil Pressure sending unit...
Yes
What Year model
It means you need to check the engine over, something is wrong.
The oil pressure sensor on an f250 engine is located at the back toward the firewall. It is centered side to side close to the intake.
The fuel pressure for an 89 Ford F250 with a 5.8L MFI is between 13 and 20 psi with the engine at idle. With the key on engine off, the gauge should read between 23 and 31 psi.
7.3L turbo
12B
4 gallons
more than zero