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2011 f150 no start


goinbroke2

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Drove to work today, when I came out to leave I hit the key and it rolled over but wouldnt start. Just past 50,000kms on it. Pushed it in the shop and checked all fuses, all good. Remembered that this morning when I fired it up it stumbled like lack of fuel for a second then drove to work fine, so I jumped the fuel relay and pump ran fine. Pulled a fuel line too and fuel poured out. Hooked up the scanner and everything is good and then I saw crank and cam sensor in sync....no. I saw the check engine light come on (Koeo) then cranked it and the check engine light went out. This indicates the pcm is getting a signal from the crank sensor. So, Im thinking maybe the cam sensor is bad?

Checked and there are 4 of them mounted on the back of the heads between the engine and the firewall.

 

So, my question;

Does this sound like a cam sensor issue or am I missing something? Like I said, it stumbled in the morning and it did that a couple days/a week ago. Fired up cold and stumbled then came up to normal idle speed and drove normal the rest of the day. Its Just before Christmas and the truck cant be down, so if I dont figure this out quick Ill have to swallow my pride and take it to the dealership.

 

Any techs on here have an idea or seen this before?

Edited by goinbroke2
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I checked out that tsb and it says that includes vehicle with the following codes.....but mine isn't kicking a code. I'll go back and see if there is any burnt marks or anything like the tsb says but I think its fine.

More info;

I've been beating my head against the wall because the cam/crank is not in sync. Well I just cranked the engine over and the scanner is saying they are in sync now. Shut the key off and it goes out but as soon as it starts cranking the sensors go in sync. I'll assume relieving tension when not cranking lets it slowly go out of sync but oil pressure from cranking puts it back in. Anyway, that was a false flag.

 

Can I pull a spark plug, hook up the coil pack and see if I get a spark or will it hurt something? I started to pull the plug a minute ago and it felt...bad...like threads coming off so I stopped and screwed it the 1/4 turn back in. Might be fine but to me it felt way bad. Metal plug and aluminum head I just went AHH! and stopped.

 

After sitting for several hours I tried it and it rolled and gave a couple kicks and then just went on turning over with no more kicks.

 

Oh, don't know if I mentioned it but as I was cranking it over I gave it a shot of quick start and not a kick. That's why I'm guessing no spark.

 

AARRGG! Buy a newer vehicle for the first time and also for the first time in my life I can't fix it. Man I'm frustrated!

 

I have to head home now but I'll be back in the shop here tomorrow morning I guess. Gotta get this fixed, have WAY too much on the go for my truck to be down. Called the dealership and they're booked right out to next Friday.

 

Thanks for the response, I'll check fuse 27 and get back to you. Any other things I could look for?

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Well poo.....after poking and prodding I snapped open the connector for the throttle valve and tried to pull it off. It didn’t want to come and I didn’t want to break it so I wiggled it and shoved it back on then snapped the red clip. Jumped in and just before leaving gave it one more try. Right to the floor and crank and it started like a flooded engine with a carb. A couple revs and it cleaned out and ran fine. Shut it off, fired right back up. Did a diagnostic check and no codes, nothing wrong, just like normal. Aaarrrggg!!!!

 

No idea what was wrong or what fixed it. Now I’m concerned it’ll poo the bed in the future...

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