Shut off at a stop signs, will not start, multiple codes?

GAYLE RIDESATTHEDOOR

MEMBER
2010 FORD F-150
5.4L
V8
4WD
AUTOMATIC
196,675 MILES

Truck quit running at a stop sign. Scanned it and these codes showed up:
P0012 P0018 P0022 P0175 P0300 P0303 P0304 P0305 P0307 PO345. Truck sat for a day. Replaced plugs and coils for those misfires but didn't start the truck because the temperature outside was -50 and fluctuated between -50 to -70 for 5 or so days. I was able to get truck inside and replaced both VCT solenoids, (screens were damaged) but truck won't start still.

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,133 POSTS

Hi,

If I had to guess (theory), I have a feeling the timing chain is stretched on the bank 2-cylinder head. The codes are all related to a timing issue (retarded bank 2) and too rich of a fuel mixture which can result if one bank is retarded.

Since you replaced the VCT already and it has made no difference, it leads me to think the chain is stretched, we have a failing fuel rail pressure sensor, the EVAP canister is full and has a stuck purge valve or even a bad MAF sensor. Still, the chain is my primary suspect, but before we take things apart, let's do a couple of things to determine if it is a fuel-related issue.

If you have a scan tool that can check freeze frame data, check what the long-term fuel trims were and let me know. Also, disconnect the MAF and see if it will start.

One other question. Have you checked the fuel pressure? If not, that would be a good thing to do as well.

Here is a link that explains how it's done:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Let me know.

Joe