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Old 09-13-2005, 09:50 AM
fordguy4life fordguy4life is offline
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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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Old 09-13-2005, 02:18 PM
4dzilla 4dzilla is offline
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I would start with the basics like a new fuel filter and clean the maf sensor. Wouldn't hurt to check the air filter either.
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Old 09-14-2005, 10:22 AM
fordguy4life fordguy4life is offline
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I was thinking maybe injector related. Any thoughts on this?
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Old 09-14-2005, 10:22 AM
 
 
 
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