2017 F-150 3.5 Ecoboost

Fordlover wrote:

hone eagle wrote:

Dave H M wrote:
What is the purpose/gain from the start/stop feature.

Guessing it is sold as less fuel consumption and less emissions, or maybe getting down to that sort of nitty gritty to met some sort of other stndard?

Every little bit helps ,they have come to an "agreement" as to what its worth (to the EPA) and thus raise the mpg on the window sticker that much.
It might be only noticeable to a mileage nut ,but for the fleet mpg its important.

Yep, when you have a rolling group of 100 cars that approach and stop at a red light, having all of them turn the engine off for the red light duration collectively will save a lot of fuel/emissions. Now do this across 250 million vehicles on USA roads, and you can see how this will make a noticeable reduction in fuel usage.

My question: how does the A/C compressor run with the engine off? In August, in Texas, you don't want your engine turning off at all.

In the stop/starts I have driven if the hvac items are called on the engine will start up or just not turn off.

Plug in a trailer plug tester. The auto off function is disabled when it senses a trailer connected.

As I understand there is a time limit it will remain off algorithms or some such .Right now a lot can be turned off using tow/haul but it resets with each key on/off ,going forward I bet it will not be turnoff able ?

hone eagle wrote:

Dave H M wrote:
What is the purpose/gain from the start/stop feature.

Guessing it is sold as less fuel consumption and less emissions, or maybe getting down to that sort of nitty gritty to met some sort of other stndard?

Every little bit helps ,they have come to an "agreement" as to what its worth (to the EPA) and thus raise the mpg on the window sticker that much.
It might be only noticeable to a mileage nut ,but for the fleet mpg its important.

Yep, when you have a rolling group of 100 cars that approach and stop at a red light, having all of them turn the engine off for the red light duration collectively will save a lot of fuel/emissions. Now do this across 250 million vehicles on USA roads, and you can see how this will make a noticeable reduction in fuel usage.

My question: how does the A/C compressor run with the engine off? In August, in Texas, you don't want your engine turning off at all.

Dave H M wrote:
What is the purpose/gain from the start/stop feature.

Guessing it is sold as less fuel consumption and less emissions, or maybe getting down to that sort of nitty gritty to met some sort of other stndard?

Every little bit helps ,they have come to an "agreement" as to what its worth (to the EPA) and thus raise the mpg on the window sticker that much.
It might be only noticeable to a mileage nut ,but for the fleet mpg its important.

What is the purpose/gain from the start/stop feature.

Guessing it is sold as less fuel consumption and less emissions, or maybe getting down to that sort of nitty gritty to met some sort of other stndard?

So as not to Hijack this thread any more.

Smart cars too smart?

spoon059 wrote:
Its kinda like the "Runaway Toyota's" from a couple years back. Turns out that it was DRIVER ERROR. Drivers weren't properly securing floormats, which got underneath the accelerator and caused the accelerator to get stuck. Rather than put cars in neutral, they continued trying (unsuccessfully) to mash on the brakes. Didn't work.

Exactly. Clear case of operator error and maybe lack of awareness of how things work (ie. neutral position of the transmission). Even so, some of those people still found time to call 911 and ask for help.

Sorry, did not mean to hijack the thread.

rhagfo wrote:



Yes, I do understand the concept and reason, I see a wrongful lawsuit in some car makers future because of this feature.
We have already seen deaths due to people not turning off their engines when parking in the garage!

Death from stop/start. Are you sure you are not confusing push button start. I have not heard of one death blamed on the stop/start function.

rhagfo wrote:
We have already seen deaths due to people not turning off their engines when parking in the garage!

I think that has more to due with driver error/stupidity than an auto feature.

Its kinda like the "Runaway Toyota's" from a couple years back. Turns out that it was DRIVER ERROR. Drivers weren't properly securing floormats, which got underneath the accelerator and caused the accelerator to get stuck. Rather than put cars in neutral, they continued trying (unsuccessfully) to mash on the brakes. Didn't work.