Dereku
Well-Known Member
- First Name
- Derek
- Joined
- May 18, 2022
- Threads
- 31
- Messages
- 2,814
- Reaction score
- 6,894
- Location
- Chicagoland Area
- Vehicle(s)
- 2021 Ford Ranger
- Occupation
- Project Manager
I always thought D stood for drive. Learn something everyday, its default. No that I Know this I am sure the transmission will be much smoother.Most of the "Problems" reported here are by design. Ford is HEAVILY constrained by the EPA, in particular CAFE standards. If they don't meet these ever increasing fleet average numbers, it can make the entire business a non-profit enterprise. Hence the extreme measures like Auto Start-Stop and the ... odd ... transmission programming.
They (Ford) are fully aware of the ... unsatisfying ... driving experience when the transmission is programmed to hyper-mile for you. This is why you end up with the engine turning 1200 rpm at all possible moments. Ford's work-around is to offer alternate transmission scheduling for special or enthusiast driving experiences. These modes cannot persist across drive cycles, so they must be selected by the owner on each drive cycle. "Tow-Haul" mode will raise the cruise rpm setpoint to 1800 or so, and eliminates the skip shifting, and enables engine braking. "Sport" mode takes it another step up, and biases the scheduling in the direction of better throttle response, higher cruise rpm, and offers a much "sportier" driving experience.
The bottom line is this: "D" mode is the default program, and it is programmed to get the most economical use of gasoline out of the vehicle, particularly with reference to the EPA Drive Cycle. That is what it is, and the driving experience is completely secondary to this.
For a stock machine, you can use Tow/Haul or S mode to make the drive more like most people expect it to be, and if you want more customization of the experience, the transmission shift schedule can be reprogrammed by several aftermarket "tuners". This can make any perceived "shortcomings" of the transmission magically disappear. It's all software, and the quirks are by design.
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