2014 f150 5.0 93K miles
Have a history of issues with a #7 misfire on this thing. Back in April was in the shop for the same issue. They replaced plugs, but the misfire immediately came back. They let it cool and restarted and couldn't make the misfire come back. They had me drive it for two weeks and misfire did not return.
Fast forward to last week. First somewhat cool morning have a really rough idle when starting but after driving for a bit it smooths out. Does this every morning for the last week. Finally last night the check engine light came on. I have the following:
p0307
P0316
P0207
P0454
The P0454 is new and sounds like either wiring or a bad fuel tank pressure sensor. Can a bad sensor also cause a misfire? What's the procedure to replace this? I'm afraid it's raise the bed or drop the tank which is something I can't do in my garage.
Have a history of issues with a #7 misfire on this thing. Back in April was in the shop for the same issue. They replaced plugs, but the misfire immediately came back. They let it cool and restarted and couldn't make the misfire come back. They had me drive it for two weeks and misfire did not return.
Fast forward to last week. First somewhat cool morning have a really rough idle when starting but after driving for a bit it smooths out. Does this every morning for the last week. Finally last night the check engine light came on. I have the following:
p0307
P0316
P0207
P0454
The P0454 is new and sounds like either wiring or a bad fuel tank pressure sensor. Can a bad sensor also cause a misfire? What's the procedure to replace this? I'm afraid it's raise the bed or drop the tank which is something I can't do in my garage.