Where is the crankshaft sensor position located?

DJINO

MEMBER
2011 FORD F-150
3.5L
6 CYL
4WD
AUTOMATIC
280,000 MILES

The truck listed above is an XLT model with a 3.5l EcoBoost.

I had a check engine indicating issues with camshaft sensors Bank1 A&B and Bank2 B, misfire on cylinder 6 and finally an oxygen sensor Bank1 1.
Replaced all sensors as well as the cylinder 6 coil.
It cleared the misfire and oxygen issues, but I still have codes p0365, 369, 390 and 394.
Some say these codes sometime hide a crankshaft sensor issue.
What are your thoughts on this and where is the crankshaft sensor on this particular model?
The engine starts easily but runs rough and stops as soon as I put it on drive and ride just a few steps.
Thanks in advance for your advice.
Regards,
Djino.

6 Replies

JACOBANDNICKOLAS

MECHANIC
108,280 POSTS

Hi,

If it is running, the crankshaft position sensor is good. These codes, as you are aware, are all related to the camshaft position sensors. The codes are set when the powertrain control module (PCM) can no longer detect the signal from the camshaft position sensor or in this case sensors.

Are there any wiring issues or connector issues? Did all of these set at the same time?

Let me know.

Joe

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Wednesday, December 13th, 2023 AT 7:44 PM

DJINO

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5 POSTS

Hi Joe,

Thanks for the quick answer.
When my check engine light went on, there was only the oxygen sensor. I went to get the sensor a few days later and before I got to replace it, the engine started acting weird.
I checked again the codes and got the misfire on the cylinder 6 and the camshaft sensor issues.
Replaced 3 of the 4 camshaft sensors the oxygen sensor and the coil.
I checked all visible wiring and found nothing damaged or unplugged.
Because the headlight dims up and down as the engine runs, I tested the battery and voltage is at 12 with the engine off and between 14 and 15 volts when running. So, both the battery and alternator seem to be good.

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Wednesday, December 13th, 2023 AT 8:36 PM

DJINO

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5 POSTS

Just to clarify, the camshaft sensors of the remaining codes are part of the 3 that have been changed. The 4th one was not changed because it is pretty much out of reach and not part of the error codes.
Also, where can I find the wiring diagram so I can try and locate any wiring issues?
Thanks again.

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Thursday, December 14th, 2023 AT 7:55 AM

JACOBANDNICKOLAS

MECHANIC
108,280 POSTS

Hi,

As far as the wiring schematic, I attached the entire schematic for the powertrain management systems.

There are 6 pages of schematics in my manual, but I had to cut each one in half to make them readable for you. I did overlap them so you can follow from one to the next.

Let me know if this helps or if you have questions.

Take care,

Joe

See pics below.

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Thursday, December 14th, 2023 AT 8:19 PM

DJINO

MEMBER
5 POSTS

Wow! That's great!
Thank you very much.
Is there an image of the actual engine that shows the actual path of the wirering of the cam sensors around the engine in your manual? I found some on the web, but not for the 3.5l ecoboost.
Thanks again you are very helpfull!