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-   -   running rough,,finally fixed (http://www.fordtruckfanatics.com/forum/showthread.php?t=40579)

rambler 01-01-2017 12:31 PM

running rough,,finally fixed
 
well the 2000 5.4 had develped a rough issue, replaced the vacumn lines that were bad, cleaned the MAF sensor, Idle sensor, no codes, new fuel filter, and even ran sea foam in it. ran like bad gas.. finally threw a code Missfire #4, of course, so had a "spare" COP and swapped it out, still not really running right, sometimes it would, then next day, back to same.. ( all was not replaced at the same time) ,, so finally taking my wife's advice bought a new COP and swapped the spare in #4 with that one,

well now I cannot live it down, as the truck is running great again! 277K miles..

amkatt1 01-01-2017 01:18 PM

Quote:

Originally Posted by rambler (Post 687184)
well the 2000 5.4 had develped a rough issue, replaced the vacumn lines that were bad, cleaned the MAF sensor, Idle sensor, no codes, new fuel filter, and even ran sea foam in it. ran like bad gas.. finally threw a code Missfire #4, of course, so had a "spare" COP and swapped it out, still not really running right, sometimes it would, then next day, back to same.. ( all was not replaced at the same time) ,, so finally taking my wife's advice bought a new COP and swapped the spare in #4 with that one,

well now I cannot live it down, as the truck is running great again! 277K miles..

Awesome! YelloThumbUp

I so need to do a tune-up on my 4.6. The plugs need to be done for sure and haven't thrown a code but has a slight stumble every now and then. Mileage is down also.

68F1006.4 01-01-2017 02:05 PM

Very cool, gremlins are a pain to track down, but it's very satisfying once you get them exorcized.


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