SUPRA2000 Posted August 6, 2004 Share Posted August 6, 2004 does anyone know what the button behind the accelerator does Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 6, 2004 Share Posted August 6, 2004 you answered it in the subject. Kickdown. It causes the box to kick down to the lowest gear it can. Quote Link to comment Share on other sites More sharing options...
SUPRA2000 Posted August 6, 2004 Share Posted August 6, 2004 cool thanks Quote Link to comment Share on other sites More sharing options...
mawby Posted August 6, 2004 Share Posted August 6, 2004 Originally posted by carl0s you answered it in the subject. Kickdown. It causes the box to kick down to the lowest gear it can. Is that true? Only reason I ask is my auto box will kickdown if I just move the accellerator quickly, I don't need to floor it for it to happen. Unless of course this courses the special Supra 2 gear kick down? Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 6, 2004 Share Posted August 6, 2004 yep, it's like the kick ALL the way down button. Quote Link to comment Share on other sites More sharing options...
iain_spen Posted August 12, 2004 Author Share Posted August 12, 2004 are we talkin about the red button here?... Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 12, 2004 Share Posted August 12, 2004 no. we're talking about the one that says "O/D Off" next to it. The red button allows you to pull the J-Specs out of park with the engine off, or something. UK spec doesn't have it. Quote Link to comment Share on other sites More sharing options...
iain_spen Posted August 12, 2004 Author Share Posted August 12, 2004 christ! I started this post and it's doing me head in now. From a bit of experimenting with the O/D i've come to the final conclusion: O/D on - the car feels faster and gets into 4th gear O/D off - the car doesnt accelerate as fast and can't reach the top speed does this sound about right???... Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 12, 2004 Share Posted August 12, 2004 no, it's pretty friggin simple. O/D Off, turns Overdrive off. (honestly, it does) Overdrive is the fourth gear. It's called an overdrive gear because the gear ratio is greater than 1:1. Instead of reducing the gearing, it increases it. Quote Link to comment Share on other sites More sharing options...
iain_spen Posted August 12, 2004 Author Share Posted August 12, 2004 hang on then.... if O/D off disables 4th gear then surely im right in saying the car will drive slower with it off???... my car just feels noticebly slower with the O/D off Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 12, 2004 Share Posted August 12, 2004 the car won't reach top speed!! It'll redline in third gear. Quote Link to comment Share on other sites More sharing options...
iain_spen Posted August 12, 2004 Author Share Posted August 12, 2004 thats what I said! Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 12, 2004 Share Posted August 12, 2004 fair enough You kind of did, but you said it doesn't accelerate as fast !! Quote Link to comment Share on other sites More sharing options...
iain_spen Posted August 12, 2004 Author Share Posted August 12, 2004 it's just feels slower at accelerating when the overdrive is off... may be it's just me lol Quote Link to comment Share on other sites More sharing options...
carl0s Posted August 12, 2004 Share Posted August 12, 2004 overdrive is a pain if you're doing around 50mph and are on/off the accelerator. It constantly drops back into overdrive and then back out again. Times like this, you turn overdrive off and it stays in third ready for you to accelerate again. Quote Link to comment Share on other sites More sharing options...
Jake Posted August 12, 2004 Share Posted August 12, 2004 Originally posted by iain_spen it's just feels slower at accelerating when the overdrive is off... may be it's just me lol Are you sure you aren't confusing the Overdrive button with the MANU button? The MANU button will make the car accelerate a lot slower because the car is (pretty much) stuck in 3rd gear. Quote Link to comment Share on other sites More sharing options...
Terminator Posted October 5, 2004 Share Posted October 5, 2004 Originally posted by Jake Are you sure you aren't confusing the Overdrive button with the MANU button? The MANU button will make the car accelerate a lot slower because the car is (pretty much) stuck in 3rd gear. It will only be stuck in third if that is where you leave the stick. Quote Link to comment Share on other sites More sharing options...
mawby Posted October 5, 2004 Share Posted October 5, 2004 Originally posted by Terminator It will only be stuck in third if that is where you leave the stick. You mean if you leave it in Drive. Although it will still change down to 2nd if you come to a stop whilst in Drive and manual mode. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted October 6, 2004 Share Posted October 6, 2004 I've found a distinct difference in acceleration rates in any given gear from any given comparable rev range between manual mode and normal mode. My car doesn't seem to go as well sometimes in manual mode. No its not because I am lower down the rev range as I did say comparable revs in comparable gears. If for instance I am accelerating with foot flat to the floor and say approx 4500 rpm lets say in 2nd in manu mode, it feels a touch sluggish. Depress the manu button to reselect normal mode and it will noticeably pick up a lot better. Its only seemed to do this since I fitted my delimiter. I get a flat spot around a ton as well. Could be down to different speed sensors on individual boxes cause differing results. Either way O/D is just an extra gear and has no effect on the rev range of any of the other gears. If you really want to prove it to yourself, go down the road in manu and record the speed that you hit the redline at in 1st 2nd and 3rd. Then doing max accellerate record the the speed you hit the redline at in 1st 2nd and 3rd again. There will be no difference. If you still doubt then also push the O/D button to off and repeat test. O/D won't come on in manu mode. Quote Link to comment Share on other sites More sharing options...
Guest deepcom Posted October 17, 2004 Share Posted October 17, 2004 Here's one to consider then - As the O/D doesnt function in manual mode, (yeah you can switch back to auto, automatically get O/D, then switch back to Manual to maintain the O/D until you accelerate sharpish when it switches back to 3rd and then coz your in Manual it stays in 3rd), can you actually get overdrive to come on in manual mode without having to switch back to auto ? Anyone got any ideas about wiring a switch to the auto ECU so that you can manually engage overdrive by pushing an extra button when in manual ? (Would it be possible to wire a switch to the O/D actuator so instead of the auto ECU saying "switch to O/D" you simply have a button you can press ?) And assuming that is possible am I correct is saying that O/D is actually 3rd gear with another cog engaged so you actually get 3rd gear cog + O/D cog engaged simultaneously to give overdrive ? And if so with a manual O/D activation switch would it then be possible to engage the O/D in the other gears as well in effect making the auto box 6 speed ???? Your thoughts are appreciated on this one. Andy. Quote Link to comment Share on other sites More sharing options...
carl0s Posted October 17, 2004 Share Posted October 17, 2004 Overdrive is just fourth gear. The only reason it's called Overdrive is because its ratio is lower than 1:1 I'm sure the sixth cog on the 6sp'd is also an overdrive gear. Quote Link to comment Share on other sites More sharing options...
Guest Rays the roof Posted April 27, 2005 Share Posted April 27, 2005 Are you sure you aren't confusing the Overdrive button with the MANU button? The MANU button will make the car accelerate a lot slower because the car is (pretty much) stuck in 3rd gear. Not nessa celery true. Fastest 1/4 mile in an NA auto is achieved by starting in Manual with OD light illuminated and gear stick in first, foot to the floor taking it up a gear just before the red line (timing is essential) and then at 78 - 80 flick both Man and OD buttons, again timing is critical. Read all the previous threads in this post agree with some, but not all points. TRY it at Pod and prove your self wrong!! Quote Link to comment Share on other sites More sharing options...
carl0s Posted April 27, 2005 Share Posted April 27, 2005 Not nessa celery true. Fastest 1/4 mile in an NA auto is achieved by starting in Manual with OD light illuminated and gear stick in first, foot to the floor taking it up a gear just before the red line (timing is essential) and then at 78 - 80 flick both Man and OD buttons, again timing is critical. Read all the previous threads in this post agree with some, but not all points. TRY it at Pod and prove your self wrong!! he's referring to off-the-line acceleration with the stick left in 'D'. If MANU is enabled while in D, take-off will be slow 'cause the car will skip 1st gear. Quote Link to comment Share on other sites More sharing options...
Supraman Posted April 27, 2005 Share Posted April 27, 2005 no. we're talking about the one that says "O/D Off" next to it. The red button allows you to pull the J-Specs out of park with the engine off, or something. UK spec doesn't have it. Yep! It's basically for when you breakdown or want to jump start an auto. OR It's an eject button for the passanger seat in an aerotop...that always gets a worried look from the passanger! Quote Link to comment Share on other sites More sharing options...
mawby Posted May 10, 2005 Share Posted May 10, 2005 Not nessa celery true. Fastest 1/4 mile in an NA auto is achieved by starting in Manual with OD light illuminated and gear stick in first, foot to the floor taking it up a gear just before the red line (timing is essential) and then at 78 - 80 flick both Man and OD buttons, again timing is critical. Read all the previous threads in this post agree with some, but not all points. TRY it at Pod and prove your self wrong!!Also worth noting that the NA box handles totally different to the TT. I've owned both and the NA has some of the 'normal' auto box features of changing up gear early and not changing down very quick. I can easily believe the NA needs to be run in manual mode to get a quick time down a strip. The TT is a different matter though. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.