SC430 - 2nd Gen (2001-2010)

Slow Downshifting

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Old 08-30-04, 12:51 AM
  #16  
rominl
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Originally posted by Umbo
Rominl, what does "CEL" mean?

I've been manually shifting the tranny for the last few days. It makes a tremendous difference. Downshift to 2nd gear going into corners and 3rd gear just before passing on the highway. No more annoying lag waiting for the downshift to occur automatically. Much more responsive and sporty this way. Boy, Lexus really needs to work on this lame *** stock auto tranny. Thanks for all the advice. I'm probably going to get the Dragon as my next mod.
yeah that's check engine light, sorry for the confusion.

yeah doing gate shifting woudl help a lot, it will shift faster. but you will have to learn it and get used to it, otherwise it's hard to shift down sometimes.

also i always wonder what happens if you "accidentally" force it into 1st when you are going too fast?
Old 08-30-04, 04:51 AM
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1NICESC430
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If you move the shift lever to 1st gear (L) , it will not engage unless or until the car is moving at 24mph or slower.
Old 08-30-04, 10:43 PM
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Originally posted by 1NICESC430
If you move the shift lever to 1st gear (L) , it will not engage unless or until the car is moving at 24mph or slower.
ah that's good to know. same thing for other gear if the car is going too fast for the selected gear?
Old 08-31-04, 05:11 AM
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1NICESC430
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From pp. 199-201 of the 2002 manual (SC430 through 2001 production). For other model years, the page numbers might be different, but I expect the information to be pretty much the same.
Attached Thumbnails Slow Downshifting-shift.jpg  
Old 08-31-04, 08:02 AM
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All electronically controlled transmissions prevent a gear to engage above engine redline; even Corollas have that feature . The same way electronic engine control prevents over-revving the engine ('hard' limiters cut ignition; 'soft' limiters cut fuel progressively).

On a manual transmission, you'd mechanically over-rev the engine causing all kinds of damage.

Good day.
Old 08-31-04, 01:00 PM
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Originally posted by 1NICESC430
From pp. 199-201 of the 2002 manual (SC430 through 2001 production). For other model years, the page numbers might be different, but I expect the information to be pretty much the same.
very interesting. i gotta reread my manual some time
Old 09-01-04, 04:58 AM
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I leave my manual in the car so I'm never caught without it. When I want to refer to it when I'm not in the car, I read the manual's PDF files I downloaded from the Lexus web site. Very handy ... if your PC is usually running.
Old 09-03-04, 09:41 PM
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Umbo
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Originally posted by dmizock
I've found that turning off the VSC seems to eliminate or at least reduce the "stalling" when accelerating through corners. I never had this experience with my GS430 even though it too had VSC.

Great suggestion! Turning off the VSC totally gets rid of the stall that occurs when accelerating out of a corner. Couple that with a downshift to 2nd gear going into the turn and you get a tire screeching power surge that'll knock your socks off.
Old 09-16-04, 11:43 PM
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Originally posted by Umbo
Great suggestion! Turning off the VSC totally gets rid of the stall that occurs when accelerating out of a corner. Couple that with a downshift to 2nd gear going into the turn and you get a tire screeching power surge that'll knock your socks off.
i would be more careful on using that. if you floor it hard enough during turns without vsc, you get into pretty bad trouble
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