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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

reduced oil pressure

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Old Apr 13, 2007 | 07:59 PM
  #1  
ontario ford guy's Avatar
ontario ford guy
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From: Ontario
Arrow reduced oil pressure

good day all
I have a 91 F150 V-8. Had the truck in for servicing on the intake manifold gasket and they cleaned out the oil journals then performed a flush to remove any leftover residue. Now when the engine warms up, the oil pressure drops to almost nothing when I come to a stop. There is no lifter noise to indicate insufficient lubrication but... I did replace the oil pressure sensor just in case that was not happy but the problem persists. Please tell me it's not the rear mains.haha
Thanks for any help. As always, a pleasure to chat with you all
 
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Old Apr 13, 2007 | 09:31 PM
  #2  
Bruce R Leech's Avatar
Bruce R Leech
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Joined: Feb 2007
Posts: 707
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From: Mulege south Baja ca. Mx.
you need to put a mechanical pressure gauge on it to see what you realy have.
 
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Old Apr 13, 2007 | 11:38 PM
  #3  
quicklook2's Avatar
quicklook2
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Joined: May 2004
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From: Lakewood, Ohio
try that but i bet the oil pickup screen is clogged and the flush did not help it and actually clogged it more.
 
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Old Apr 14, 2007 | 01:14 AM
  #4  
Trickedout420's Avatar
Trickedout420
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Joined: Aug 2006
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heres a hint, the oil pressure gauge on the dash isnt the real pressure all it is is a resistor and all the sending unit does is move the gauge if it sees that oil pressure is where it should be
 
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