no oil pressure while driving

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  #1  
Old 07-16-07, 09:28 AM
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Thumbs up no oil pressure while driving

I have a 1979 ford f250 with a 351 engine. when i start the truck my oil pressure is fine but when i start to drive it goes down to nothing. someone said it could be the oil sending switch but im not sure what this is or where it is. Any ideas? thanks
 
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Old 07-16-07, 11:56 AM
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Yes, sounds like a oil pressure switch.

It should be located on drivers side ,lower engine area.
 
  #3  
Old 07-16-07, 03:14 PM
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If you don't get any knocking or engine noise, likely the sender unit. If you get engine noise, DO NOT RUN THE ENGINE. Could be a bad oil pump, clogged pickup screen, bad bearings, etc, etc.
 
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Old 07-16-07, 04:21 PM
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Clogged pick-up screen gets my nod...............Typical Ford of that era.
 
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