Rough running 5.4
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Junior User
Joined: Jan 2004
Posts: 87
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From: MN
Rough running 5.4
Hi guys. I've got a problem with my '99 5.4 w/124000. Every once in awhile the truck will run rough when it's idling or shifting into OD. I replaced all of the plugs at about 90,000 when it was really running rough. I got check engine diagnostic codes then, for COPS, but not now. Changing the spark plugs took care of it the last time. I would think I would get a COP code if that was the problem. Any ideas? Thanks.
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westflgator
1997 - 2003 F150
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Nov 30, 2011 11:06 AM
Kurts74ford
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Jan 9, 2011 10:58 AM
