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| 2009 to 2014 F-150 3.5L, 3.7L, 4.6L, 5.0L, 5.4L, and 6.2L equipped F-150s. |
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#1
Sun, April 17th, 2011, 02:56 PM
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Think ive lost power over the winter
Ok heres the deal. Before the winter really started I could set my cruise control on at 75MPH on the highway and go up and down the deciently steep hills from Morehead, KY to Winchester, KY without the RPMS having to kick up to keep the truck moving at 75MPH. Now when I set the cruis control at 75 and I hit some of those hill the RPM's kick up. I havent dont anything to the truck except put more miles on it. Ive kept the oil changed every 3K miles im not due for a transmission flush for another 5K miles. Any ideas guys.
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 40 series Flowmasters, K@N CAI, Jet MAF, Troyer Under Drive Pulleys, Stainless Works Longtube headers/Hi Flow CATS w/X-pipe, Ram Air Hood G-Force, SCT X3 programmer with custom tunes 
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#2
Sun, April 17th, 2011, 07:57 PM
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Have you cleaned all the filters and stuff?
If you are running the custom tunes then the computer is not part of it...I guess you could try unplugging then reconnecting the battery, but I doubt that'll do anything. Just make sure you unplug the gryphon.
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#3
Sun, April 17th, 2011, 08:52 PM
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Ive changed the filter in the K@N (I bought an extra filter so I dont have to wait an extra day while the other one dries). what other things might need to be cleaned.
I didnt think it would be the computer, but it just seemed a little wierd to me. 
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40 series Flowmasters, K@N CAI, Jet MAF, Troyer Under Drive Pulleys, Stainless Works Longtube headers/Hi Flow CATS w/X-pipe, Ram Air Hood G-Force, SCT X3 programmer with custom tunes
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#4
Sun, April 17th, 2011, 09:02 PM
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Cleaning the throttle body might help. Also look at your maintenance log for when you last replaced the fuel filter. Supposed to do that every 15K. I noticed my truck got quite a bit faster after I changed that out. The filter was absolutely disgusting, I dont know how it even ran.
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#5
Sun, April 17th, 2011, 10:22 PM
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How easy is it to change out the fuel filter. Is it something a novice person like myself can do. Is there an article on how to specifically clean the throttle body and what stuff do you use. Im sure you have to becareful on how you do it and what you use.
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40 series Flowmasters, K@N CAI, Jet MAF, Troyer Under Drive Pulleys, Stainless Works Longtube headers/Hi Flow CATS w/X-pipe, Ram Air Hood G-Force, SCT X3 programmer with custom tunes
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#6
Mon, April 18th, 2011, 06:57 AM
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The fuel filter in the 09-10s (and probably 11s) is not user serviceable (it's in the tank).
Unless you over oiled your K&N, your MAF and throttle body shouldn't need to be cleaned. I'd suspect winter blend gas is still being sold in your area or maybe there's more alcohol content (E10).
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"Good judgement comes from experience. Experience comes from bad judgement." - Colin Powell to new batch of 2LTs (while serving as V Corps Commander)  Factory manuals here: http://www.motorcraftservice.com
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