2004 fx4 5.4L
03-12-2014, 07:39 AM
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2004 fx4 5.4L
New to this forum from Ontario Canada. Recently had a bucking/surging problem around 80km and about 1250+rpm took it in and got a tune up got the spark plugs changed and fuel filter changed and is running perfect now no buck so far now for the better gas mileage!!
03-12-2014, 04:57 PM
#3
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Nice to see a fellow Ontarian
03-12-2014, 09:27 PM
#5
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I changed my fuel filter this past weekend, and i must say i def notice a difference in gas mileage. AS well as better throttle response and faster acceleration. I couldnt believe the difference in before and after.
03-12-2014, 09:40 PM
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I bought this truck used last may and it had a couple problems. one was the fuel pump module went on it back in December and still had that same surge at 80 but now with these new plugs it has yet to happen, so I'm hoping that was all it needed.
03-12-2014, 09:43 PM
#7
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Probably so. I changed my plugs and cop's last spring and it ran great after. Im starting to get a little bit of rough idle at times but not all the time. It seems to run better when i put seafoam in the tank though. I usually run 87 in it and im sure thats a part of the problem