QUOTE (tCizzler @ Apr 22 2010, 08:37 PM)
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Yes, i swear. I'm really blown away that this isn't the way all cars are!! Because all the ones i've payed attention to, did apply brakes. That's why it was such a shock when the Sonata didn't. I almost took it in, i thought something was wrong
Then again all of MY cars in particular have been stick shifts. It can't downshift, so maybe that makes it different?? who knows
That explains it. When you lift off the throttle in an automatic, there is very little "engine braking" so it will coast much further. When you lift off the throttle in a manual, you get a lot of "engine braking", so much so that it would feel like the brakes were applied.
When using cruise control, the throttle is modulated to maintain speed. If you slow, the CC opens the throttle slightly to speed up. If you speed up (like doing down hill) the CC will close the throttle to slow down. With a manual, that closing of the throttle will create a large amount of engine braking to prevent you from speeding up. The throttle will close very little because speed will drop quickly. With an automatic that basically free-wheels in high gear, that throttle closing creates very little engine braking. So little that the CC will close the throttle all the way but you will still speed up do to the automatic free-wheeling.
So what you are feeling is a difference between CC in an auto vs CC in a manual. But in both cases, the brakes were not applied. What you felt in your old cars was engine braking via the manual trans.
