E-shifting
Thread Starter
Driver
Joined: Oct 2002
Posts: 102
Likes: 0
From: Tampa, FL
E-shifting
I've only started playing around with the e-shift on my 99 400 and I am unsure of a couple things.
First, when shifting from 2-3 - if I shift at 15-20mph VS 40mph the car thumps. The higher the mph the smoother the shift. Is that right?
Second, when DOWNSHIFTING to slow down - what mph should you be at to go from 5-4-3-2? I ask because I get afraid that I'll ruin something if I downshift quickly at high mph.
Of course I didnt' even use e-shift until I read the manual. In the manual it have NO mention of 5th - don't know why. They don't even speak to any of the issues I pose.
If anyone can shed some light on this, please do so. I want to feel at ease that I won't royally screw something up.
THANKS
First, when shifting from 2-3 - if I shift at 15-20mph VS 40mph the car thumps. The higher the mph the smoother the shift. Is that right?
Second, when DOWNSHIFTING to slow down - what mph should you be at to go from 5-4-3-2? I ask because I get afraid that I'll ruin something if I downshift quickly at high mph.
Of course I didnt' even use e-shift until I read the manual. In the manual it have NO mention of 5th - don't know why. They don't even speak to any of the issues I pose.
If anyone can shed some light on this, please do so. I want to feel at ease that I won't royally screw something up.
THANKS
Lexus Champion
Joined: Feb 2001
Posts: 2,851
Likes: 4
From: Arkansas
Well, see, that's the advantage of a manumatic transmission that's electronically controlled. It WILL NOT downshift (whether you use the e-shift paddles or the stick) until the car's speed has decreased such that the engine won't be over-revved in the lower gear.
As far as thumping, the engine/trans ECUs still get a little confused sometimes and your shifts may be a little rougher in the lower gears.
Bottom line: you can't grenade your motor or your transmission. And that's a good thing.
As far as thumping, the engine/trans ECUs still get a little confused sometimes and your shifts may be a little rougher in the lower gears.
Bottom line: you can't grenade your motor or your transmission. And that's a good thing.
Driver
Joined: Nov 2002
Posts: 197
Likes: 1
From: Florida
Part of the reason for using the eshift is so that you have the shifting advantages of a manual. There's really not a good reason to be shifting from 2 to 3 @ 15-20mph. You should not be shifting out of 2nd until you're going about 25-30mph (unless you're looking for quick acceleration, then you shift when you're going faster). For normal driving, it's safe to say you upshift anywhere between 2000-3000rpm (personally I prefer 3000 in my standard but that's b/c it's only a 4cyl Sunfire). Even in with the eshift you can hear when the engine is ready.
For downshifting, I think you need to get to know the car. I have not had a chance to drive the bf's gs YET, but in my car I try to downshift around 3000rpm (up to 4000rpm if I really need to stop). I have driven an Eclipse with the manumatic (not sure how similar it is to the gs). Usually, I do: 5th to 4th @ 50mph, 4th to 3rd @ 35-40, 3rd to 2nd @ 25-30, and into 1st @ under 10mph. But, as I said above, I drive a 4cyl Sunfire (either way, a true stick is quite different from the eshift)...whole 'nother animal.
For downshifting, I think you need to get to know the car. I have not had a chance to drive the bf's gs YET, but in my car I try to downshift around 3000rpm (up to 4000rpm if I really need to stop). I have driven an Eclipse with the manumatic (not sure how similar it is to the gs). Usually, I do: 5th to 4th @ 50mph, 4th to 3rd @ 35-40, 3rd to 2nd @ 25-30, and into 1st @ under 10mph. But, as I said above, I drive a 4cyl Sunfire (either way, a true stick is quite different from the eshift)...whole 'nother animal.
Last edited by allisonb1013; Dec 3, 2002 at 05:05 PM.
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