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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Help! Losing Oil Pressure

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Old Feb 6, 2002 | 09:49 AM
  #1  
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Matty
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Help! Losing Oil Pressure

 
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Old Feb 12, 2002 | 08:07 AM
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84xlt
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Help! Losing Oil Pressure

When truck is first started in the morning, oil pressure is fine. When is warms up, I notice that the oil pressure has dropped. Low but still okay. If at idle when hot, the needle does not register until the revs are up. Any ideas.
Thanks,
Rick
 
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Old Feb 12, 2002 | 08:21 AM
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onestep
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Help! Losing Oil Pressure

How many miles are on it, has this been a slow change or all in one day? There could be a problem with the sender unit, or the bearings are all real loose or the oil pump clearances are getting real loose also.
A little more info please.
 
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Old Feb 12, 2002 | 08:43 AM
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84xlt
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Help! Losing Oil Pressure

onestep,
Engine is 5.8 Liter, 4V HO with 90,000 miles on it. Runs and sounds very strong. Uses or burns no oil. Quiet as a kitten. It was like this when I bought the truck, so I don't know if it was gradual or started all at once.
Thanks
 
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Old Feb 12, 2002 | 09:08 AM
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slikness
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Help! Losing Oil Pressure

[updated:LAST EDITED ON 12-Feb-02 AT 10:09 AM (EST)]Get a mechanical gauge and check the oil pressure at idle after the truck is hot...that will give you a true indication of what is happening...if you're using the factory pressure gauges you could easily be having a problem with the Ford gauge (resistor problem at the gauge or something like that)...

 
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Old Feb 12, 2002 | 09:28 AM
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84xlt
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Help! Losing Oil Pressure

Slik
I will pick up a mechanical guage today.
Thanks.
 
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Old Feb 12, 2002 | 11:19 AM
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Help! Losing Oil Pressure

Just a heads up.

Sometimes little teeny weenie bits of engine crud can block/plug the orifice to the sending unit altering the pressure.


Dennis



Please Don't Ask Me Any Tough Questions As:
"I'm Saving My Memory For When I Develop Alzheimer's"


78 F-150 429CJ,Silver
w/Explorer Pkge.
641/2-Mustang 260,Pre-World's Fair Car.
64-Fairlane500 S/C waiting for a 390-4spd.
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78-Buick LeSabre 403 4V
84 Volvo DL Wagon
 
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