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Old April 7th, 2011, 08:14 PM   #1
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Default 05 Expedition Not Starting

My mom's 2005 Expedition w/ the 5.4 (83,000 miles) has decided to not want to start right away recently. When she goes to start it, it will start, run really rough and stall after about 5 sec of running. If she tries to restart it right away all it does is crank, not try to fire or anything. If she leaves the key in the on position for about 10 sec and then starts it, it runs fine. I'm thinking it's the fuel pump but not sure. The odd thing is that it does not do it every time she starts it. Any ideas?
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Old April 7th, 2011, 11:53 PM   #2
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There could be a million things. Any CEL's? any chance to run a scan?

Why are you thinking fuel pump? Are you thinking that leaving the key in the ON position is building up enough pressure to run the truck for a short time. Can you hear it kicking on everytime? Check fuel pressure, should be easy.
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Old April 8th, 2011, 05:11 AM   #3
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I would look for a corroded connection some where. Leaving the key on may be warming the connection enough to supply enough current to allow the truck to start. Start pulling connectors apart and inspecting them. Including the fuses in the fuse block and all ground connections.
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Old April 8th, 2011, 11:32 AM   #4
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There could be a million things. Any CEL's? any chance to run a scan?

Why are you thinking fuel pump? Are you thinking that leaving the key in the ON position is building up enough pressure to run the truck for a short time. Can you hear it kicking on everytime? Check fuel pressure, should be easy.
No cel's. I could take it up to Oreillys to get it scanned. And yes that is what I was thinking. Have not listened for it yet. I'll see if I can rent a fuel pressure gauge.
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Old April 8th, 2011, 03:29 PM   #5
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Ever changed the fuel filter? Unfortunately on these if they don't throw a code and you don't fix them for a living they can be difficult to diagnose. Good luck, post any findings and we'll try and help you out.
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Old April 8th, 2011, 10:05 PM   #6
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Ever changed the fuel filter? Unfortunately on these if they don't throw a code and you don't fix them for a living they can be difficult to diagnose. Good luck, post any findings and we'll try and help you out.
Fuel filter was done about 10k ago.

Anyone a tech at a Ford dealership not too far from Macomb?
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Old April 10th, 2011, 04:41 PM   #7
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Well it died today. When I was driving it today, it was acting like I was giving it throttle and then letting it go, like revving it up. It kinda stopped but then started again 5 min later. Took it to get gas and on the way back, it would not do over 10 and then it stalled. We can't get it restarted.

Anyone a tech at a Ford dealership near Macomb?
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Old April 10th, 2011, 04:45 PM   #8
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did you check fuel pressure?
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Old April 10th, 2011, 05:05 PM   #9
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did you check fuel pressure?
I don't have a gauge. I was planning on renting one from autozone or oreillys.
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Old April 10th, 2011, 07:34 PM   #10
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Fuel pressure=0psi. When we sprayed ether into the throttle body, it started and ran for a few seconds before dying. When I crawl under the truck to listen for the fuel pump kicking on, I don't hear anything. And yes, I checked the fuse for the fuel pump.
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Old April 11th, 2011, 05:33 AM   #11
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I work at a Ford dealer up here in Traverse City. Check the Fuel Pump Driver Module (FPDM). It is at near the back...I think you can see it through the left rear wheel
well. It will be bolted to the top of the frame crossmember. Those little bastards corrode away and then you get no fuel pump. There is an updated kit with studs that space the module away from the frame to help prevent corrosion like this.
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Old April 11th, 2011, 06:43 PM   #12
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It was covered with corrosion and when I was brushing it off, a hole opened up in the back of it.
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Old April 11th, 2011, 08:20 PM   #13
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bingo
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Old April 11th, 2011, 08:36 PM   #14
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bingo
Thanks. We are going to the dealer tomorrow to get one.
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Old April 12th, 2011, 09:28 PM   #15
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Got the new FPDM, plugged it in, but did not mount it down yet. Tried to start the truck and nothing. I work tomorrow night, but I am going to mount it up on Thursday and see if maybe it just needs to be grounded to the frame.
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Old April 14th, 2011, 09:12 PM   #16
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Got it mounted up, unhooked the battery, unhooked the fuel filter, and re-hooked every thing back up and it runs finally.
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Old April 15th, 2011, 07:15 AM   #17
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Sweet
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