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At wits End... P0345 - low oil pressure 06 F150 5.4

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Old 07-22-2012, 02:37 PM
Steve_Uzi Steve_Uzi is offline
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At wits End... P0345 - low oil pressure 06 F150 5.4

Hi All,

First off, thanks for taking the time to read my post... I have been having quite a rough time fixing a P0345 code on my 06 F-150 w/5.4 w/85,000. This truck has gone to a Ford dealer every 5K for the oil change/checkup etc.

Long and short - P0345 Code @ approx 83,500 miles, rough idle once the engine was up to temp and it would clear if you bumped the skinny pedal.

I have replaced the following:

--Both Cam Phasers
--Both VCT Solenoids (they both had holes in the screens - see this post http://www.ford-trucks.com/forums/11...-solenoid.html
--Passenger side Cam Position sensor (I broke it pulling it out to do phaser swap)
--Spark plugs - SP515's

Issue was still present so then I replaced:
--Complete Timing chain set (Chains,Gear, Guides and Tensioners) - Drivers (left) side tensioner collasped.

Once all back together and running the code is still there so I finally installed a REAL electric oil pressure gauge. Turns out I only have about 15psi at hot idle and 50psi when driving etc.

I am at wits end, because at this point I would have to guess that the engine is junk... Either a bearing is shot or whatever...

Do I take the 3-4 hours to drop the pan to potentially see what is going on? Or just drop some 15W40 in the engine and trade it in?

Please help...
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Old 07-23-2012, 12:55 AM
skunkoffroad skunkoffroad is offline
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Trade it in? Sounds like bad karma
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Old 07-23-2012, 06:06 PM
Steve_Uzi Steve_Uzi is offline
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Quote:
Originally Posted by skunkoffroad View Post
Trade it in? Sounds like bad karma
Going to trade it in I put the 15W40 in today... 40 psi @ hot idle ~700 rpm and 75 psi @ 2000 plus rpm.

The P0345 code didn't rear its ugly head in the 1 hour of around the town driving. It never idled rough, nor did it attempt to stall.. Which makes sense because the cam phasers are now getting enough oil pressure.
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Old 07-25-2012, 10:58 PM
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air1jpg air1jpg is offline
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Could this have been a bad or weak oil pump?
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Old 07-25-2012, 11:14 PM
Steve_Uzi Steve_Uzi is offline
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Quote:
Originally Posted by air1jpg View Post
Could this have been a bad or weak oil pump?
Maybe but I doubt it.. since I got higher oil pressure with the 15W40 oil... But I am done turning wrench on this truck... The only way I will continue to turn wrench is if a dealership REALLY lowballs my trade-in value...
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