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Old 07-06-2012, 10:05 AM   #1
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Default Truck won't stay running...Ideas!!!

I have a '95 f150 5.0L. When I go to start it slow starts...will skip a little then turns smooth for like 4-5 seconds then just turns off like it has no gas. I've tried putting the gas to the floor when it turns smooth and it's sound fine and revs smooth too...yet still turns right off, like someone turned the gas off. I checked the inertia switch, I got a Fuel pressure tester and it's sits at like 32-34ish even stays there when it turns off. It's weird...It just started over night. I can't really get it to run so i can't take it too get it diagnosed...Just wonder if anyone has heard of it before I have to just have it towed and pay out the *** to have it fixed.
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Old 07-06-2012, 10:08 AM   #2
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could be a crank sensor, spark issue, or a weak fuel pump...does your truck have dual tanks?
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Old 07-06-2012, 10:12 AM   #3
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I only just recently purchased the truck in march. It has one tank, the mid 19 gallon I think. It's the long one.
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Old 07-06-2012, 10:22 AM   #4
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it could be some type of alarm system...i know the older fords you need to unlock the passenger door first then the drivers...that disables the alarm but that doesnt sound like your issue...check the crank sensor
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Old 07-06-2012, 10:28 AM   #5
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Oddly enough my wife parked to close to it and when I checked with the fuel pressure tester my buddy turned the key for me through the passenger side, so that's how I unlocked it. But I do know what you are talking about, my dad has the same year model and his alarm goes off a lot while we are working because of not unlocking the passenger side first.
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Old 07-07-2012, 11:01 AM   #6
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I don't have my book in front of me. Are you sure that fuel pressure is normal? For some reason it sounds low to me.
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Old 07-07-2012, 11:37 AM   #7
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I think your right, I was searching and someone one here said it should hold between 45-60psi. Does that sound correct? Since I said before my dad has the same truck basically, I'm going to go over to his house and use the tester on his truck to see if I get same results. Could the fuel filter bring the pressure down that much or would it more likely be the fuel pump going out?
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Old 07-07-2012, 01:29 PM   #8
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For some reason 55 sticks in my head but without the specs. I can't be sure. Fuel filter could drop it and its easy to replace. Yours is a 95. The fuel system is different from my 88 in that there is no DFR and no high pressure frame rail pump and a single tank. Maybe one of the gurus on 95s will chime in.
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Old 07-07-2012, 04:39 PM   #9
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Well I went out to try again to get a really good reading, so it was not just a 32-34ish and upon turning the key first it went to 10psi stopped, turned it off then tried again got 18psi stopped, again went to 28psi stopped and that's the highest it would go. So I do think it's something in the fuel system. Where would u guys suggest I start first? I don't want to just change everything unless it is everything. Is there a way I can check one thing over the other to rule out what it might be?
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Old 07-07-2012, 06:25 PM   #10
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I'm having the same issue atm.Starting the truck up for the first time on a daily basis,it'll shut off within a cpl seconds,but any time i start it up there after,it runs great!

If you're pressure is reading that low? perhaps the pump is going out on ya bud.How old is the pump? when did ya did ya get it? ask yourself these q's.

My pump's basically brand spanking new and already i believe it's giving out.Thank goodness for that 1 yr warranty!

Best way to tell is get the codes.they'll tell you exactly whats wrong.....go to the website below,read all of it and follow the directions.just like i had to do yest.

http://oldfuelinjection.com/?p=13

or perhaps your injectors are clogged up.if so,go buy "fuel injector cleaner" at family dollar/dollar general for 2.50 (cheap and worth it).You may need to buy it 3-5 diff times but in the end,worth it.talking from experience.

always stick w/the cheapest route first for testing the prob out (buying new fuel filter,getting codes,checking spark plugs,etc)
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