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03 expedition randomly dies

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Old

Mar 7, 2012 | 11:01 AM

#1

99f250craig

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03 expedition randomly dies

My wifes 03 expedition seems to die at random. She said it will mainly do it when slowing down to a stop but has done it while driving. It usually cranks back up with one or two tries. No CE light. Does it every couple of days. Is a 4.6. Any ideas?

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Old

Mar 7, 2012 | 11:16 AM

#2

alloro

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Start by cleaning the IAC valve. When it gets dirty it doesn't move smoothly so the idle can end up being too low to keep the engine running if your foot is not on the gas pedal.

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Mar 7, 2012 | 01:28 PM

#3

99f250craig

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Quote:

Originally Posted by alloro

Start by cleaning the IAC valve. When it gets dirty it doesn't move smoothly so the idle can end up being too low to keep the engine running if your foot is not on the gas pedal.

I actually had it off the other day when I was cleaning out the egr passages. It didnt appear to be really dirty; a thin layer of black dust. I can go ahead and try it. What should I use? I have some really aggresive degreaser that I got from the refinery, not sure if that will damage it though.

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Mar 7, 2012 | 04:23 PM

#4

alloro

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I just use carb cleaner. Keep in mind that sometimes cleaning isn't enough, they do go bad from time to time.

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Old

Mar 8, 2012 | 10:37 AM

#5

mig25

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Joined: Jul 2007

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From: St Louis, MO USA

Check your FPDM. Here is a thread posted by SFC2001 ,

https://www.ford-trucks.com/forums/1134339-2006-expedition-fpdm-fuel-pump-issue-fixed-pics.htm
l

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Old

Mar 8, 2012 | 11:32 AM

#6

pdqford

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Joined: Jan 2001

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From: Central NYS

Quote:

Originally Posted by mig25

Check your FPDM. Here is a thread posted by SFC2001 ,

https://www.ford-trucks.com/forums/1134339-2006-expedition-fpdm-fuel-pump-issue-fixed-pics.htm
l

Don't think your gonna find a FPDM on a 2003 Expy.

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Old

Mar 8, 2012 | 01:47 PM

#7

mig25

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Joined: Jul 2007

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From: St Louis, MO USA

Good, even better if he does not have one. One less thing to go bad.
I did not know the 03s wouldnt have a FDPM

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Tags

03, 2003, air, control, dies, driving, expedition, f150, ford, fuel, iacv, idle, pump, randomly, valve

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