1997 - 2006 Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition and Lincoln Navigator Discussion

running rough

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May 17, 2005 | 09:10 PM

#1

ford390gashog

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Fleet Owner

Joined: Jan 2004

Posts: 26,007

Likes: 575

From: Brentwood,CA

Club FTE Gold Member

running rough

when i come to a stop and it idles my 03 expy 5.4 will run super rough like it stumbles and is missing and shakes the whole truck what could cause this it only happens every so often it has about 25,000 on it

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May 17, 2005 | 10:51 PM

#2

dnasjc

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Joined: Sep 2004

Posts: 17

Likes: 0

From: Northern California

It might be a COP problem (coil over plug). It is a bit premature at 25,000 miles, but as with any electrical device, they can go at anytime.

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May 18, 2005 | 01:01 PM

#3

atrident

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Joined: Nov 2004

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Mine does the same. Dealer says its not out of parameters. Others in here say to look at the IAC...Idle air control.

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May 18, 2005 | 04:05 PM

#4

Hotel Charlie

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Joined: Oct 2003

Posts: 23

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From: Spring TX

I have a 03 and it's doing the same thing. I had it checked and got the same "not out of parpmeters" from the dealer.

HC

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May 18, 2005 | 06:11 PM

#5

ford390gashog

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From: Brentwood,CA

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i was told it might be the IAC not working it is a common problem with these

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May 19, 2005 | 07:08 AM

#6

wavinwayne

Senior User

Joined: Oct 2004

Posts: 326

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From: North Alabama

Try cleaning the throttle body plate.

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