Shift! **** You Shift!
I have a 2013 Ford F150 5L V8 Long box extended cab 4x4. I was towing a 1999 Rockwood Ultralight 24' travel trailer. The thing doesn't even weigh 3000 lbs. There was this magical speed where on the...
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swimmer_spe wrote:
Yet no one has given me an explanation why it didn't do it with a heavier trailer.
The more and more I think about it, the more and more I think something is not working right, as apposed to my driving skill. The heavier trailer should have been more of an issue, but crossing Canada (4000km) it pulled like a dream. It would sit in 6th at 110 km/hr. Now, a lighter trailer, at 100km/hr it is hunting.
So, excuse me if I take issue with someone saying "just don't use the top gear".
Which is why, yes, until I get it checked out, I will tow in 5th. However, this does not mean I should.
I can't speak for Ford, but my Duramax doesn't even want to shift into 6th gear until I exceed 60 mph in tow/haul mode. Chevy's tuning for tow/haul mode moves the shift points higher in the rpm range, locks the torque converter earlier (2nd gear vs 4th) and delays downshifts.
You said you were towing the heavier trailer at 110kph... maybe just enough more rpms to allow the engine to make the torque needed to keep it all rolling down the road? Or fast enough to stay above the shift point? Really, we've beat this horse enough!
