NEED HELP: Crank no start - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
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post #1 of 23 (permalink) Old 12-14-2018, 09:57 PM Thread Starter
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Crank no start

Hello I am from Saskatchewan, I currently have a 2009 5.4 f150 XLT extended cab and I'm having some issues with crank no start. I have removed harness and fixed all wiring I have reinstalled it and bought a new fpdm. Still no start. I have spark as it does start when enough vapuur has passed through the lines. My issue is definitely no fuel. I have dropped the tank and tested the pump and it works. I have swapped in New relays and tested fuse box for power with test light. Battery is brand new and spark plugs have just been done. I went out and bought a decent code reader and I get a code of p0300 code 1/1 missfire on multiple cylinder, caused I'm assuming by the no fuel issue. My question is what else is left to buy and change out or check. MAF sensor is good crank sensor is good . All my tests lead to a bad pcm. Any help with this matter is greatly appreciated thanks.
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post #2 of 23 (permalink) Old 12-15-2018, 07:15 AM
 
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You did check the fuel filter?

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post #3 of 23 (permalink) Old 12-15-2018, 07:32 PM Thread Starter
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It's an intank filter so noon user replaceable and it pumps fuel when tank is dropped and connected to snowmobile battery.
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post #4 of 23 (permalink) Old 12-16-2018, 07:37 AM
 
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There's no filter on the inside of the frame rail? In that case test the pressure before the return fuel pressure regulator. Your regulator may be open.

Edit/update - After some research, I see Ford pulled a Chrysler! So the filter would be in the tank with the pump. Stupid design! Are you using the correct key to start the truck? At work, we have a 2004 F150 that they cut a second key for when we bought it. It has a skim module, so if you don't use the correct key it will crank but no start. However, it wouldn't surprise me that the regulator is in the tank as well. You may be replacing the fuel pump/filter assembly. Do a pressure test.

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Last edited by Destructicon; 12-16-2018 at 07:58 AM.
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post #5 of 23 (permalink) Old 12-16-2018, 01:24 PM Thread Starter
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Quote:
Originally Posted by Destructicon View Post
There's no filter on the inside of the frame rail? In that case test the pressure before the return fuel pressure regulator. Your regulator may be open.

Edit/update - After some research, I see Ford pulled a Chrysler! So the filter would be in the tank with the pump. Stupid design! Are you using the correct key to start the truck? At work, we have a 2004 F150 that they cut a second key for when we bought it. It has a skim module, so if you don't use the correct key it will crank but no start. However, it wouldn't surprise me that the regulator is in the tank as well. You may be replacing the fuel pump/filter assembly. Do a pressure test.
Fuel regulator is in the tank as well and all tank internal seem to function fine with 12v to the pump motor I can pump fuel out of the line with a good pressure if hooked to the 12v battery. Now im not sure if it's the key as the truck does start with starter fluid. Ford wants $1154 for a new pcm and I'm not sure if I want to spend that much money on one or if that is even going to be the fix for this. Again all help is appreciated. Thanks.
P.s would the truck start at all with a bad pcm? Even with starter fluid? Just a thought but not sure how the pcm works and this manual I bought is useless.
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post #6 of 23 (permalink) Old 12-16-2018, 07:08 PM
 
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One thing I had read about was the fuse would appear to be ok on initial inspection but when removed, it was found to be burnt. Some of the pictures were not pretty. The pcm failing in that manner is possible but highly improbable.

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post #7 of 23 (permalink) Old 12-17-2018, 10:53 AM Thread Starter
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Fuse is fine I have pulled it about ten times no corrosion or burnt ends inside of socket is good no melted plastic or scorched contact's. Would it possible to be Pat's related as I'm not sure but anti theft light blinks a couple times then goes out when key is turned to the on position.
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post #8 of 23 (permalink) Old 12-17-2018, 06:00 PM
 
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Depends on who Pat is. The f150 at work does the same thing.

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post #9 of 23 (permalink) Old 12-25-2018, 01:00 AM
 
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It is possible the passive anti theft system (pats) could be causing problems.

Such is life. Just passing through.

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post #10 of 23 (permalink) Old 12-28-2018, 02:54 PM
 
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in my older dodge 2.2 turbo cars, IF a ground strap that runs from the manifold to the firewall is missing/ broken the car will not start even though the other ground straps are intact

so check the grounds on the engine

also you stated the fuel pump works with a battery running it , lowered from the truck

could you be missing a ground from the tank to the frame ??

some cars have a ground strap on the tank too
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