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 https://www.ford-trucks.com/forums/1...-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? :-huh

Please help... :(

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.

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...