Looking for your thoughts
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New User
Joined: Jun 2021
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From: Michigan
Looking for your thoughts
I have a 2011 f150 xlt with 3.5 ecoboost it has 170k the Yet other day I was driving came to a stop light and the truck seemed to misfire when I pulled away from the traffic light the truck shimmered and shaped and I could not get more than 2 miles an hour I read the check engine light codes They are as follows
P0151. P0300, P0301, P0302, P0303, P0365 ,P0369
I'm not sure where to start
Thanks for any help you could provide
P0151. P0300, P0301, P0302, P0303, P0365 ,P0369
I'm not sure where to start
Thanks for any help you could provide
Super Moderator
Joined: Jan 2008
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Likes: 1,523
From: Maine, Virginia
I have a 2011 f150 xlt with 3.5 ecoboost it has 170k the Yet other day I was driving came to a stop light and the truck seemed to misfire when I pulled away from the traffic light the truck shimmered and shaped and I could not get more than 2 miles an hour I read the check engine light codes They are as follows
P0151. P0300, P0301, P0302, P0303, P0365 ,P0369
I'm not sure where to start
Thanks for any help you could provide
P0151. P0300, P0301, P0302, P0303, P0365 ,P0369
I'm not sure where to start
Thanks for any help you could provide
Ok, welcome to FTE! The short of it is, your truck needs new plugs and possibly coils too.
P0151 02 Sensor Bank 2. May as well replace all four sensors. I'm surprised that your lasted as long as they did, mine were replaced starting at around 85,000 miles.
P0300 = Random misfires
P0301 Cyl 1 misfire
P0302 Cyl 2 misfire
P0303 Cyl 3 misfire
p0365 / 369 Lack of voltage from the camshaft position sensor Bank B
At 60,000 miles I replaced all plugs on my 2011 eco, at 67,000 miles the #2 coil went out. At 100,000 miles I replaced all plugs and coils as a preventative measure.
These ecoboost engines will tell on you if you're not keeping ahead of the maintenance.
So, you're going to have to spend a little time and money to get her perfect again. I'd start with the four o2 sensors and all the plugs and coils and see if that clears up the 365 and 369 fault codes. It may not and those codes may need to be addressed separately as you could very well have to deal with a timing issue such as cam phasers, chain, etc.
Hotshot
Joined: Mar 2011
Posts: 11,950
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When I see multiple cylinder misfires I'm always suspicious of common parts, not simultaneous failures. (That said, I have seen simultaneous failures, too.)
Check the fuel filter and pressure before you buy parts. If you have access to any, you might want to run some diagnostics on the computer. Then again, a failing camshaft position sensor could cause all of the codes that you're seeing.
Tim knows a lot more about the ecoboost than I do and if suggests some serious maintenance at that mileage he's probably right. But in the short term, I'd look at just a couple of common parts....
Check the fuel filter and pressure before you buy parts. If you have access to any, you might want to run some diagnostics on the computer. Then again, a failing camshaft position sensor could cause all of the codes that you're seeing.
Tim knows a lot more about the ecoboost than I do and if suggests some serious maintenance at that mileage he's probably right. But in the short term, I'd look at just a couple of common parts....
Laughing Gas
Joined: Dec 2010
Posts: 1,200
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From: Timbuk3, MI
BassFantasizer... Check the fuel filter and pressure before you buy parts....
Tdavis8742...
The EcoBoost has 3 MAP sensors ...
.
Fleet Mechanic
Joined: Jul 2019
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I’d solve that cam sensor circuit code(s).
For whatever reason, it’s not getting a signal to the computer and that makes fuel delivery a crapshoot, so you end up with misfires all along bank 1. This may solve the O2 sensor code once that is dealt with.
Start there. Don’t fire the random parts cannon as Tim suggests.
For whatever reason, it’s not getting a signal to the computer and that makes fuel delivery a crapshoot, so you end up with misfires all along bank 1. This may solve the O2 sensor code once that is dealt with.
Start there. Don’t fire the random parts cannon as Tim suggests.
Lead Driver
Joined: Nov 2020
Posts: 7,128
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From: Sportsman's Paradise
Check your engine wiring harness for critter damage, rats/squirrels etc love to chew on wires and can cause your concern and every one of those codes. I couldn't tell you how many engine harnesses I've had to repair/replace over the years for just such a scenario.
Hotshot
Joined: Jul 2005
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Cam shaft position sensor voltage is bad ( cam / VCT/ wiring)... that causes the MISSFIRE... That causes the O2 reading out of whack... Dont do the O2.... Work on the cam shaft / sensor / VCT problem first.
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From: Michigan
It was a broken camshaft
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From: Maine, Virginia
Obviously I was way off base and thank you for closing the loop on this one.
I would also like to thank those who chimed in here with more appropriate responses than mine, good action guys. This seems to be really rare occasion, a camshaft breaking.
I would also like to thank those who chimed in here with more appropriate responses than mine, good action guys. This seems to be really rare occasion, a camshaft breaking.
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