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Re: No Oil Pressure 89 f-250
"Sharon K.Cooke" <scooke@cox.net> wrote in message
news:43F2303A.7ECB61AD@cox.net...
> 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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