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Old 01-02-2013, 05:40   #1 (permalink)
TKO
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Back again. Same fuel problems

So I went for a week or so absolutely perfect. Now it's having a hard time
Starting. I don't understand why. I can drive for and hour or two with no problems and shut it off and it starts fine. I can start it and pull it out of my driveway and come back 10 minutes later and it won't start. This is what ie concluded. When the truck does not start I leave the key to the on position, and not try starting, if I wait for about 3-5 munutes I hear my fuel pumps come on and it starts fine and has no problems. Im starting to think this is my ignition switch, the switch that has the pin that turns when the key is turned correct? The previous owner broke the steering column and I have my ignition switch hanging under my dash and start it right at the switch. Is there anything else I should try? I moved my truck this morning started fine, turned it off, went back 5 minutes later and started. It's driving me insane. And another idea I thought of was maybe my fuel pressure regulator or a bad relay


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Old 01-03-2013, 05:41   #2 (permalink)
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Replaced my ignition switch and the same thing. This happens with both my tanks on my trick. I have bought the schematic finally and next time it does this, on going to jump out and put in the new relay. And if that doesn't work then I'm going to replace all of the components up to the pumps. I know my fuel pumps are fine.


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Old 01-03-2013, 16:56   #3 (permalink)
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Truck didn't start first or second time. Replaced relay 2 with the brand new one. And started up. Got to my destination. Started up fine again, drove 1000ft or so and it shut off while I was driving. So the schematic starts at a 20A fuse then a relay and now its my fuel inetia switch, then my switch to switch primary and secondary tanks then that's it for the fuel system. I might go to a junk yard and get a whole new steering column and then diagnose from there, as I recall, the way I start my truck is by a hanging ignition switch and that's it


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Old 01-03-2013, 18:28   #4 (permalink)
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Re: Back again. Same fuel problems

Do you have a fuel pressure gauge? Before spending all the money on parts, I'd get a gauge so that you can at least verify that you're lacking pressure at the fuel rail.
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Old 01-03-2013, 19:30   #5 (permalink)
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Re: Back again. Same fuel problems

I agree.
Until you prove something you would be waisting money and effort on the cure before finding the cause.
Good luck.
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Old 01-06-2013, 12:24   #6 (permalink)
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I am pretty sure autozone will check that right? And it's driving me crazy because I can crank for half an hour and nothing, leave the key on the on position and if I wait long enough without trying to start my truck I can hear the relay click ad my pumps come on, does a fuel pressure regulator build pressure up before tr truck cranks? How does it work?


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Old 01-06-2013, 16:33   #7 (permalink)
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Re: Back again. Same fuel problems

Don;t know about yours, mine made me buy the tool. You can get a reliable one for 45-60 bucks and it's worth having on hand with today's fuel injection.
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Old 01-07-2013, 03:26   #8 (permalink)
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It's just scary because the regulator is about the same price lol well on Friday when I get paid ill make a choice of my next step. And my CEL is on, and I guess my air pump is bad? I took my intake manifold off and there is a white vacuum line that broke. I cannot find where It's supposed to be connected to, and its sucking in a lot of air. Is there a vacuum line diagram? The vacuum line starts at a little box right next to the battery, if it helps at all


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Old 01-10-2013, 18:22   #9 (permalink)
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Re: Back again. Same fuel problems

Diagram's kinda small, but here: http://repairguide.autozone.com/znet...3f8021dc64.gif
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Old 01-11-2013, 04:08   #10 (permalink)
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PERFECT thank you so much. I bought a length of tubing and found the air pump and where the hose is supposed to connect and reconnected the two. Thanks for the help. The engine light is off now


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