Question about 2004 Ford F150

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F 150 not starting

I have a truck that seems to run when it wants to. It will drive fine all day, you park at a store and when you come back out it doesn't start. then when you don't expect it, of course when the person towing shows up, it starts right up. will work for awhile the next time you jump in it , not start again. I replaced the fuel filter and fuel regulaer. still not working. Comment by jyztoy021, posted on Oct 20, 2008 I was told it was a fuel pump by a mechanic. We replaced that and it still didn't work. So we took it in and then they said it was the fuel regulator and replaced that. I still have the same problem. How do you check to see if you have fuel pressure while cranking?

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  • hoofguy Jan 11, 2009

    My son has the same year truck and is now having this problem. It was towed to a garage and the mechanic got in it and it started up. He brought it in and tested it with nothing coming up as wrong. we had him change the fuel filter while it was there. he kept it over night to see if it would do it again. It did not. One week later my son went to start it and it turned over but will not start. Later in the day he tried in and it started right up. The battery is new. Did any one figure out what caused this problem?

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Two things come to mid. FMC is notorious for there emergency fuel shut off switch malfunctioning. Should be in the passenger kick panel. I honestly don't now how to test these. Also, Some ECMs will not operate below 12.6 volts. The engineering geniuses allowed the motor to crank but not start the ECM if the voltage is low. Many owners have had to replace batteries or carry a booster pack just in case. May not be your problem but wanted to throw that out there.

Posted on Jun 02, 2009

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There will be a schrader valve on the fuel line under the hood. A fuel pressure gauge will screw into it

Posted on Oct 21, 2008

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