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2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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LBC'N YA
User
Sep 19, 2009, 9:06 AM
Post #1 of 7
(7959 views)
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2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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More often than not, my trucks oil pressure guage stays in the(LOW) "pegged" position with the red warning light on. It fluctuates up and down a couple of times, But It primarily stays in the (LOW) position actually reading no pressure until she warms up. I tried to look for the sensor location in my Haynes Repair manual and found absolutely nothing at all pertaining to the oil pressure sensor. What do you think? 
(This post was edited by LBC'N YA on Sep 20, 2009, 9:41 AM)
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LBC'N YA
User
Sep 20, 2009, 5:42 PM
Post #2 of 7
(7935 views)
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Re: 2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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Wow Don't everyone type their answers to me at once  LOL
Unless I should have known it might have been the Flux Capaciter or the Wessenater aternate direction diode 
(This post was edited by LBC'N YA on Sep 20, 2009, 5:52 PM)
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DanD
Veteran
/ Moderator
Sep 21, 2009, 11:00 AM
Post #3 of 7
(7924 views)
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Re: 2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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Sorry buddy
It’s not that we didn’t want to answer your question; it just somehow got missed, I guess? Plus you know what help is like these day’s; especially when the regulars are here on their free time and volunteering that time for nothing other then the occasional thank you.
So later then never; the oil pressure switch is on the left front of the engine.
Dan.
Canadian "EH"
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LBC'N YA
User
Sep 21, 2009, 11:17 AM
Post #4 of 7
(7914 views)
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Re: 2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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Thanx for getting back to me Dan  . Might u have a picture or an exploded view of approx. where i'll need to be navigating?
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DanD
Veteran
/ Moderator
Sep 21, 2009, 2:01 PM
Post #5 of 7
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Re: 2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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The diagram wasn’t worth the time too look it up.
Just look down along the left front of the engine block; maybe close to the oil filter or its housing. Maybe go and buy the replacement switch; at least you’ll know what you’re looking for, then?
Short of that; it’ll cost you a plain ticket; so I can come down too wherever the truck is and point it out for you. LOL
Dan.
Canadian "EH"
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RonW
New User
Jan 8, 2010, 2:22 PM
Post #6 of 7
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Re: 2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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I have the same truck in a 2WD and the same problem. I replaced the presssure sensor a year ago and still have the problem. I have a couple of more symptoms / observations. My engine temp guage warning light comes on at the same time (engine cold). When I rev the engine up to 2500 RPM the lights go out and the oil pressure returns. There is plenty of oil in the pan and no valve/lifter ticking at any time. Once the engine warms up and the temp. needle comes off of the peg, the engine oil pressure and temperature gauge works fine.
I'm thinking poor ground through the temp. sensor or fouled up computer.
Any suggestions?
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chickenhouse
Enthusiast
Jan 8, 2010, 8:51 PM
Post #7 of 7
(7706 views)
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Re: 2000 Ford F150 4WD 5.4 not reading oil pressure when its first starting up
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I wish you'd start a new thread with your issue. If you replaced the sensor a year ago and still have not locked the engine up, I would think there is a different prob. Have you put a manual oil pressure gauge in to check actual oil pressure? That would eliminate any worry of low oil pressure you have had for over a year.
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