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Discussion Starter #1
The other day my oil pressure game went to low. and you can tell it's
not getting oil because you an here it in the motor. Sometimes when i
first start up the truck it had oil pressure just fine. After driving
for 10 or so minutes it drops to nothing. But if i shut off the truck
and start it back up it goes right back to normal.
 
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Discussion Starter #2
"ncrocket" <[email protected]> wrote:

> The other day my oil pressure game went to low. and you can tell it's
> not getting oil because you an here it in the motor. Sometimes when i
> first start up the truck it had oil pressure just fine. After driving
> for 10 or so minutes it drops to nothing. But if i shut off the truck
> and start it back up it goes right back to normal.
>
>


Less time lookin for nookie, more time on maintenance?!
;)

Clues may exist on dipstick and oil filler cap.

Foamy light chocolate? Black Sludge?

--
Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price
you pay..DEAL with it!
 
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Discussion Starter #3
ncrocket wrote:
>
> The other day my oil pressure game went to low. and you can tell it's
> not getting oil because you an here it in the motor. Sometimes when i
> first start up the truck it had oil pressure just fine. After driving
> for 10 or so minutes it drops to nothing. But if i shut off the truck
> and start it back up it goes right back to normal.


I'm not sure just when Ford went from a "real" oil pressure gauge to a idiot
light with an analog readout, but it probably was late 80s for the truck lines.
If there's a button type sender at the oil pressure output port, it's a fake
gauge that closes a switch around 7 psi and then reopens it at say, 5 psi. Put a
mechanical gauge on the oil pressure port and see if the readings are consistent
with the factory "gauge". If so, you have problems, ranging from a dirty sump
(oil pickup screen gets clogged) to worn main bearings or crankshaft. If not,
it's the gauge itself, the sender, or the sender wiring.
 
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Discussion Starter #4
"Sharon K.Cooke" <[email protected]> wrote in message
news:[email protected]
> ncrocket wrote:
>>
>> The other day my oil pressure game went to low. and you can tell it's
>> not getting oil because you an here it in the motor. Sometimes when i
>> first start up the truck it had oil pressure just fine. After driving
>> for 10 or so minutes it drops to nothing. But if i shut off the truck
>> and start it back up it goes right back to normal.

>
> I'm not sure just when Ford went from a "real" oil pressure gauge to a
> idiot
> light with an analog readout, but it probably was late 80s for the truck
> lines.
> If there's a button type sender at the oil pressure output port, it's a
> fake
> gauge that closes a switch around 7 psi and then reopens it at say, 5 psi.
> Put a
> mechanical gauge on the oil pressure port and see if the readings are
> consistent
> with the factory "gauge". If so, you have problems, ranging from a dirty
> sump
> (oil pickup screen gets clogged) to worn main bearings or crankshaft. If
> not,
> it's the gauge itself, the sender, or the sender wiring.


Since the late 60's at least, '71 for sure.
 
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Discussion Starter #5
ncrocket wrote:
> The other day my oil pressure game went to low. and you can tell it's
> not getting oil because you an here it in the motor. Sometimes when i
> first start up the truck it had oil pressure just fine. After driving
> for 10 or so minutes it drops to nothing. But if i shut off the truck
> and start it back up it goes right back to normal.
>


Oil pickup screen is plugged.

For some reason, quite common on the 5.8/351.

I'll bet that's your engine...?

Rob
 
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Discussion Starter #6
351CJ wrote:
>
> "Sharon K.Cooke" <[email protected]> wrote in message
> news:[email protected]
> > ncrocket wrote:
> >>
> >> The other day my oil pressure game went to low. and you can tell it's
> >> not getting oil because you an here it in the motor. Sometimes when i
> >> first start up the truck it had oil pressure just fine. After driving
> >> for 10 or so minutes it drops to nothing. But if i shut off the truck
> >> and start it back up it goes right back to normal.

> >
> > I'm not sure just when Ford went from a "real" oil pressure gauge to a
> > idiot
> > light with an analog readout, but it probably was late 80s for the truck
> > lines.
> > If there's a button type sender at the oil pressure output port, it's a
> > fake
> > gauge that closes a switch around 7 psi and then reopens it at say, 5 psi.
> > Put a
> > mechanical gauge on the oil pressure port and see if the readings are
> > consistent
> > with the factory "gauge". If so, you have problems, ranging from a dirty
> > sump
> > (oil pickup screen gets clogged) to worn main bearings or crankshaft. If
> > not,
> > it's the gauge itself, the sender, or the sender wiring.

>
> Since the late 60's at least, '71 for sure.


No, they had idiot lights back in 1949 or so; I'm talking about the fake gauge
that's driven by an on-off switch like the idiot light, but appears to be an
actual needle-type gauge. That piece of trickery didn't happen until the late
1980s on Ford trucks, and Ford-made cars with apparent gauges in the early
1990s.
 
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Discussion Starter #7
"Sharon K.Cooke" <[email protected]> wrote in message
news:[email protected]
> 351CJ wrote:
>>
>> "Sharon K.Cooke" <[email protected]> wrote in message
>> news:[email protected]
>> > ncrocket wrote:
>> >>
>> >> The other day my oil pressure game went to low. and you can tell it's
>> >> not getting oil because you an here it in the motor. Sometimes when i
>> >> first start up the truck it had oil pressure just fine. After driving
>> >> for 10 or so minutes it drops to nothing. But if i shut off the truck
>> >> and start it back up it goes right back to normal.
>> >
>> > I'm not sure just when Ford went from a "real" oil pressure gauge to a
>> > idiot
>> > light with an analog readout, but it probably was late 80s for the
>> > truck
>> > lines.
>> > If there's a button type sender at the oil pressure output port, it's a
>> > fake
>> > gauge that closes a switch around 7 psi and then reopens it at say, 5
>> > psi.
>> > Put a
>> > mechanical gauge on the oil pressure port and see if the readings are
>> > consistent
>> > with the factory "gauge". If so, you have problems, ranging from a
>> > dirty
>> > sump
>> > (oil pickup screen gets clogged) to worn main bearings or crankshaft.
>> > If
>> > not,
>> > it's the gauge itself, the sender, or the sender wiring.

>>
>> Since the late 60's at least, '71 for sure.

>
> No, they had idiot lights back in 1949 or so; I'm talking about the fake
> gauge
> that's driven by an on-off switch like the idiot light, but appears to be
> an
> actual needle-type gauge. That piece of trickery didn't happen until the
> late
> 1980s on Ford trucks, and Ford-made cars with apparent gauges in the early
> 1990s.


Well I have an '82 pickup or bronco, or an 89 pickup, take your pick, with a
factory idiot GAUGE, not the light! If you need a picture the gauge and
it's sending unit, I'll gladly post if on a binary Usenet group for you. I
don't have my 71 truck anymore, The oil pressure gauge in that one may have
been after market.
 
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Discussion Starter #8
351CJ wrote:
>
> "Sharon K.Cooke" <[email protected]> wrote in message
> news:[email protected]
> > 351CJ wrote:
> >>
> >> "Sharon K.Cooke" <[email protected]> wrote in message
> >> news:[email protected]
> >> > ncrocket wrote:
> >> >>
> >> >> The other day my oil pressure game went to low. and you can tell it's
> >> >> not getting oil because you an here it in the motor. Sometimes when i
> >> >> first start up the truck it had oil pressure just fine. After driving
> >> >> for 10 or so minutes it drops to nothing. But if i shut off the truck
> >> >> and start it back up it goes right back to normal.
> >> >
> >> > I'm not sure just when Ford went from a "real" oil pressure gauge to a
> >> > idiot
> >> > light with an analog readout, but it probably was late 80s for the
> >> > truck
> >> > lines.
> >> > If there's a button type sender at the oil pressure output port, it's a
> >> > fake
> >> > gauge that closes a switch around 7 psi and then reopens it at say, 5
> >> > psi.
> >> > Put a
> >> > mechanical gauge on the oil pressure port and see if the readings are
> >> > consistent
> >> > with the factory "gauge". If so, you have problems, ranging from a
> >> > dirty
> >> > sump
> >> > (oil pickup screen gets clogged) to worn main bearings or crankshaft.
> >> > If
> >> > not,
> >> > it's the gauge itself, the sender, or the sender wiring.
> >>
> >> Since the late 60's at least, '71 for sure.

> >
> > No, they had idiot lights back in 1949 or so; I'm talking about the fake
> > gauge
> > that's driven by an on-off switch like the idiot light, but appears to be
> > an
> > actual needle-type gauge. That piece of trickery didn't happen until the
> > late
> > 1980s on Ford trucks, and Ford-made cars with apparent gauges in the early
> > 1990s.

>
> Well I have an '82 pickup or bronco, or an 89 pickup, take your pick, with a
> factory idiot GAUGE, not the light! If you need a picture the gauge and
> it's sending unit, I'll gladly post if on a binary Usenet group for you. I
> don't have my 71 truck anymore, The oil pressure gauge in that one may have
> been after market.


Check the sender on the '89. It's most likely the button-type, and the "gauge"
in the cab is a fake. If it is a button (snap-switch) sender, look at one of the
Ford truck websites for a how-to conversion to a real gauge, or if it doesn't
bother you, do nothing.
 
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