- trailer sway control = better mpg? - Ford Powerstroke Diesel Forum
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Old 07-09-2014, 10:22 AM
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- trailer sway control = better mpg?

I read if you turn trailer sway off you can get better mpg?

Now is that on the lie-o-meter only or in real life driving?

If his is true I'd like to know how? Thanks
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Old 07-09-2014, 11:30 AM
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You can turn it off or verify its off by cycling thru the message center and turning off the trailer sway control. Don't really understand how it saves fuel but if it does it will work for me.
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Old 07-09-2014, 11:49 AM
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It works for me.. My question is that I turn it off and then when I start my truck again the next time I'm in it it's back on..

Is there anyway to disable it all the time and then just turn it on when I need it?
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Old 07-09-2014, 12:40 PM
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Looks like it's programed that way from the factory. Found this on the web: "Trailer sway control can be disabled during any key cycle........................Note that regardless of chosen enable state, Trailer Sway Control will be re-enabled at each new key cycle." Maybe someone with a little more knowledge than me will chime in.
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Old 07-09-2014, 12:50 PM
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Damn yea I have been looking it up since I posted, and it seems as though it's always engaged with every key cycle.. So you gotta remember to turn it off..
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Old 07-09-2014, 01:01 PM
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Seems like I will have to turn it off each time I start up. Kind of a PITA.
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Old 07-09-2014, 01:21 PM
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So it ACTUALLY give better mpg or just reads better on the dash??
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Old 07-09-2014, 03:54 PM
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I'll report back with data on this topic this weekend after an upcoming trip. I've been towing an enclosed car trailer about 5k miles this year since I bought my '14 CCSB F250, and haven't been too thrilled with the towing mileage. I've never thought about turning off the sway control, but it makes sense that it could be significantly affecting mileage. I have noticed that even on a slightly windy day, my towing mileage is significantly affected compared to towing the same trailer with my old 7.3L Excursion. If it's constantly killing engine power and cycling the brakes, that would definitely do it. That same trailer setup behind the Excursion would yield 10-10.5mpg towing on every single tank. The 6.7L has been anywhere from 8.0 up to 11.5, all hand calculated.

I'll be pulling on a 500mi rd trip this weekend towards an area that's usually pretty windy, so I should be able to make some decent observations.
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Old 07-09-2014, 04:20 PM
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So when turned on does it affect the gas mileage whether your towing a trailer or not?
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Old 07-10-2014, 07:57 AM
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Quote:
Originally Posted by tibadoe View Post
So when turned on does it affect the gas mileage whether your towing a trailer or not?
Good question. I noticed that it was "on" when driving without a trailer this morning, but I don't know if it prevents it from activating when it's not "seeing" a trailer hooked up (although it only knows about a trailer if it has elec brakes, can't tell on standard 4pin plug ones).

I googled Ford sway control and found some discussion on an F150 board and those guys are saying it affects mileage whether you're towing or not. I'm not sure if the superduty uses a similar system or not though.
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