2018 Ford F150 Cam Crank Sync

Shane Technician Massachusetts Posted   Latest   Edited  
Resolved
Drivetrain
2018 Ford F-150 Platinum 5.0L (5) 10-spd (10R80) — 1FTEW1E5XJFD48143
P0301 — Cylinder 1 Misfire Detected
P0302 — Cylinder 2 Misfire Detected
High Fuel Pressure

Hello ladies and gentlemen, I'm looking for a camp and crank waveform for this 2018 F-150 5.0. Looking at all data 18 to 21 should be the same, 17 and older is different.

Here is some background in case it Peaks anyone's interest, vehicle came from a body shop saying it had P0301 and p0302 which they cleared and then changed the oil and said it looked milky so they sent it to us. I took the oil cap off and it looks clean and pulled the dipstick out and oil also looks clean. There are no codes, all monitors are set except for evap, mode 6 has zero misfires, cylinder contribution looks perfect. I was running and driving it in all conditions for about an hour today and only counted one or two misfires on most cylinders in that time according to data ,nothing that I could feel from the driver's seat.

Things I did notice in data was the desired fuel pressure at idle was 400 PSI but actual fuel pressure was at 800 and if I let it idle for a while would climb up to 2500 PSI. Almost all the time the actual fuel pressure was double or more than desired. Also noticed the camshaft desired minus actual for all four camshafts showed a 50 degree variance , not all the time just during RPM changes( -25 to 25) seems excessive to me. Also noticed oil pressure pid would get down to 10 psi at times , I remember the 5.4 would need 25 psi or more to operate vvt properly. One last thing I noticed I had the oil cap off of the passenger valve cover while it was running and the timing chain look like it was wobbling around excessively, seeing all of this I would like to verify cam timing even though there are no codes suggesting it. Truck does seem to run good no issues that I felt has stock intake tube but has aftermarket exhaust. 

As I said my main question is just looking for a known good cam crank sync but any input would be appreciated.

I will post the VIN tomorrow morning when I get to work.

0
Matt Technical Support Specialist
California
Matt
 

Maybe try to relearn the crank sensor (I forget what ford calls it) and lay off the voice text 😉

0
Ð Awarded
Glenn Owner/Technician
Texas
Glenn
 

Hi Shane, It runs well but your information (data) you are sharing is all over the map. What kind of scanner are you using? Oil looked milky, that is a matter of opinion. Aeration can mimic a possible water in oil appearance. Depending on the body damage severity, there could have been an oil cooler that was damaged. The 3.5 does have issue with timing chain components and water pump…

+1
Ð Awarded
Helpful
Dennis Owner/Technician
Michigan
Dennis
 

I chased a misfire code on a similar truck. Never misfired for me. Customer brought it back a month later stating it smoked alot after sitting overnight. Turned out to be a bad injector leaking down.

0
Ð Awarded
Karl Diagnostician
Massachusetts
Karl
   

Shane This truck 2016 F150 5.0L I had originally had misfire dtc's along with p0022 and running rough complaint. Might be worth looking at vct data with scan tool first. VCT solenoids were the fix. Also, note oil pressure PID.

+2
Ð Awarded
Helpful
Thanks
Shane Technician
Massachusetts
Shane
 

I did look at that and it ranges from -25 to +25, oil pressure is low at times but not when the variation is out.

0
Ð Awarded
Chris Technical Support Specialist
New York
Chris
   

Lag in the Cam adjustment is normal under unsteady load conditions. If under steady loads it works, under varying loads it trends the direction requested, and responds appropriately with command, I would not condemn the VCT system solely on lag. “Some” is normal but should eventually get there. As far as base timing, 0% duty cycle on the solenoids should show 0° cam timing. The PCM's are…

+2
Ð Awarded
Thanks
Shane Technician
Massachusetts
Shane Resolution
 

So I was never able to find a known good waveform for this vehicle. I could not duplicate the misfires or see the oil get milky. No signs of a blown headgasket. I let the customer go, told him to comeback when he experiences the problem again.

0
Resolution Ð Awarded