I think i can Midwest

[I think i can]

I recently purchased a 1999 Ford Ranger which had not been started for a while. I put in a new fuel pump and reset the fuel shut off valve and to my surprise it started. I let it run for a bit and noticed that the oil pressure when to zero. I am not sure where to go from here.

 

[Uncle Gump]

What engine?

IMHO... put a mechanical oil pressure gauge on it.

 

[pjtoledo]

was it starting to make a lot of noise? that would be bad.
the oil pressure sender is a switch, not an actual gauge.
when the switch gets iffy/screwed up it can show zero pressure at idle.
my 2000 3.0 did that for years, especially when cold.
as Gump stated, get a real gauge on it and go from there.

 

[I think i can]

What engine?

IMHO... put a mechanical oil pressure gauge on it.

It is a 2.5

 

[I think i can]

was it starting to make a lot of noise? that would be bad.
the oil pressure sender is a switch, not an actual gauge.
when the switch gets iffy/screwed up it can show zero pressure at idle.
my 2000 3.0 did that for years, especially when cold.
as Gump stated, get a real gauge on it and go from there.

It doesn't make any noise and idles well.

 

[SenorNoob]

It's highly unlikely you have zero oil pressure and no engine noise. More likely is the wire fell off the "sender".