Forum Discussion

noteven's avatar
noteven
Explorer III
Jun 03, 2021

F-350 6.2 gas - cruise control response lazy

On cruise in rolling hill terrain the speed will drop 5 mph before the engine / trans gets around to leaning into the harness. The committee meeting takes longer than I like and it must annoy following traffic. Once a downshift is decided on then the truck accelerates uphill back to cruise speed. No, this is not the best strategy for fuel economy.

It is marginally better in tow/haul. The other tow/haul function is fine.

It is also a bit better on 91 gas vs 87 but it is still there.

If I use manual trans mode which is available with cruise on, shifts are crisp and instantaneous, and the engine rarely needs to be above 3000 or 3500 rpm to get the job done with my camper / trailers. Set speed is easily maintained. The lag and then drop 2 gears downshift and accelerate cycle is gone completely.

Is the throttle / downshift respone on cruise control programmable on a 2012 era F-350 6.2 gas Torqshift 6 speed without spending hundreds$ on a tuner?

Thanks

Before you post "get a diesel" - it's ok I have one in my Kenworth complete with dools.
  • Personally, I like driving my truck ... never use cruise control. Feels like the truck is less 'agile' for whatever reason, especially in hill country.
  • Welcome to the world of crappy Ford cruise control! my V-10 Excursion did the same thing as does my current V-10 MH. by the time the PCM decides to open the throttle, you have already lost 5mph. so now the PCM has to open it more, when it realizes its not gaining speed it opens it more, now its at WOT and it downshifts 2 gears to try and bring the speed back up. even my 02 Excursion that was cable operated throttle body reacted this way. Our Explorer does the same thing. you have to give it throttle just before the hill to keep it from doing all that.
    my old Dodge conv van, minivan and my current Chrysler 300 don't do that at all.
    I will not own another Ford just because of this one feature, and the fact they rot away after 5 years!
  • noteven wrote:
    If I use manual trans mode which is available with cruise on, shifts are crisp and instantaneous, ...

    When I towed with my old E150 4.6L, I always took it out of overdrive when I approached a hill.
  • 2112's avatar
    2112
    Explorer II
    My F150 does the exact same thing. I don't think the cruise was intended for hill country.
    I'm proactive and give it the gas when I see an incline coming. Sometimes I just take it off of cruise and drive it the old fashion way.
  • This is why I got rid of my 2016 gas Ram. By the time it decides to get going, it's in the hole big time and has to try to catch up, and when towing up a mountain pass, it might not catch up until over the top. Hello Cummins!
    JK
  • jdc1's avatar
    jdc1
    Explorer II
    There are various fuel mileage mandates. This is EXACTLY why the truck responds that way, to increase fuel mileage.