stumbles at first start

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Aug 6, 2004 | 02:42 PM

#1

rivenray

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Exclamation

stumbles at first start

I have a 98 f250 with a 4.6 truck was running great but now when I start it up first thing in the morning or after it has sat for 8 hours it seems to want to stall.. It stumbles for a few seconds then reves upand is good to go.. I'm thing it may be my fuel filter but not sure... any help would be great...

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Aug 6, 2004 | 11:54 PM

#2

LxMan1

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From: Louisville,Ky.

I would suspect a sticky IAC valve. (Idle Air Control) This is pretty common on older vehicles with some miles on them.

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Aug 8, 2004 | 08:04 AM

#3

rivenray

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Thanks..could you give me a location on the IAC valve..never had mess around with that before...

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Aug 8, 2004 | 12:06 PM

#4

LxMan1

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From: Louisville,Ky.

It's on top of the intake behind the throttlebody. It has a 2 wire plug on it and is held down by (2) 8mm headed bolts.

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1st, 351, 54, ford, morning, starts, stumbles, thing

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