Auto car doubts
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Hi Friends,
I need some advice.
I have an auto car.
As you know, there is a auto gear and 'more power' gears 1 and 2 in addition.
During driving, if what must I take note when shifting from auto gear to 1 or 2?
Or what should I not do when so doing? Like things to avoid to damage the gear.
And has anyone used the ODO ?
How should it not be used?
Thanks!!
R. -
In Singapore - just put it to "D" and go, there is very very rare cases that you will even need 1 or 2 .Originally posted by reddressman:Hi Friends,
I need some advice.
I have an auto car.
As you know, there is a auto gear and 'more power' gears 1 and 2 in addition.
During driving, if what must I take note when shifting from auto gear to 1 or 2?
Or what should I not do when so doing? Like things to avoid to damage the gear.
And has anyone used the ODO ?
How should it not be used?
Thanks!!
R.
Only case is very steep slope which you feel "D" is struggling then you use 2 then 1 . -
Auto car usally got 4 drive trains.. or transmission
Higher ends one have 5AT, usually u find many 4AT
4AT = Gear L or 1, Gear 2, D then Neutral, then Reverse.
Some come with OD button or Over-Drive button.
For Gear L or 1 - It is used for situtation where u might be struck in mud or bad road condition and nid to get out. Gear 1 or Low Gear being the best gear possible to get out from a struck position. Note that Gear 1 will not automatically go to Gear 2. It will maintain at Gear 1 until u move the level to 2 or Drive. but for L gear, Low gear, it will automatically switch between Gear 1 and 2 to get out from a struck position or slope position.
For Gear 2, mainly for slope, especially for down slope. Example, coming down from genting. it will maintain at Gear 2 until u move the level to Drive or others.
For D or Drive, it will automatically switch from Gear 1 to the highest gear based on speed. To be used in all normal driving condition.
For OD or overdrive, it's main purpose is to push the car faster at relatively higher speed. Like when u driving north-south Highway in Malaysia and needed to pick up speed to over the 100km/hr, u can use OD to make that come about faster cos it will use the 2 or 3 gear longer before switching to the higher gear or fuel efficiency gear. Note also that the RPM meter will shoot pass 3k rpm or more before switching gears in OD mode. Usually, ard 2-3k rpm, the gear usually would have automatically switch to the next higher gear.
If still in doubt, try reading up at howstuffworks.com -
Hey dude,
yes, I understand. Just that I like to explore these gears since money spent already should utilise mah.
would it be damaging if say driving in D gear at say 80km/hr or higher and then shifting to gear 2? I mean, would shifting from D at high speed ( i not a racer lah. so 80 is high) to 2 bring any damage to gear or engine?
Another reason I asked is I not sure would it help to speedup if I make us of power gears 2 and D by shifting between them gears?
any reply would appreciate lor.
cheers. -
Originally posted by Glennyek:
Thanks Glennyek!
For OD or overdrive, it's main purpose is to push the car faster at relatively higher speed. Like when u driving north-south Highway in Malaysia and needed to pick up speed to over the 100km/hr, u can use OD to make that come about faster cos it will use the 2 or 3 gear longer before switching to the higher gear or fuel efficiency gear. Note also that the RPM meter will shoot pass 3k rpm or more before switching gears in OD mode. Usually, ard 2-3k rpm, the gear usually would have automatically switch to the next higher gear.
If still in doubt, try reading up at howstuffworks.com
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That's the answers I was looking for
Hope you can oblige some more...
confirm that when pressing the OD, I can press it when at 80-100km/hr (accelerator pressed) and not that I can only press it when the car is at standstill before takeoff?
From what you said, I think its ok but I like to confirm since I don't wamt to do it wrongly.
Likewise, can I only shift to 2 or L only when the car is stopped or at low speed or break must be pressed?
thanks!! -
From 80kph in Drive mode, then to Gear 2 mode?
If I remember correctly, the manual would say how fast can the car go in Gear 1 or 2 mode...
I think Gear 1 can go 30-40kph, Gear 2 around 60-80kph max...Different cars different limits...
But generally, dun switch from Drive to Gear 2 at 80kph...It will make the engine rev at a higher RPM to match the relative speed...And probably damage your engine... -
like when on 90km/hr u wanna overtake and require extra power, use the OD(over-drive) button. it will drop one gear and u haf more power. or, u can do a double tab on ur accelerator. auto still can play one. just see how u play lor.
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How abt when in D mode and im driving at abt 70 and i floor the accelerator? I feel the car have a sudden surge of acceleration. Is it dropping down by 1 gear simlilar to how OD works?
Thx for replies.. -
Ohh.. dont do it.. it will be the same case when u shift to gear 1 in a manual car when going at 60... It will jerk suddenly and engine will suddenly REV damn high..Originally posted by NoviXG:From 80kph in Drive mode, then to Gear 2 mode?
If I remember correctly, the manual would say how fast can the car go in Gear 1 or 2 mode...
I think Gear 1 can go 30-40kph, Gear 2 around 60-80kph max...Different cars different limits...
But generally, dun switch from Drive to Gear 2 at 80kph...It will make the engine rev at a higher RPM to match the relative speed...And probably damage your engine...
Scary...
Tried and tested on a camry 2.4!
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Normally, most only play a bit with the OD button for overtaking or when the need for speed urge come about...Originally posted by reddressman:confirm that when pressing the OD, I can press it when at 80-100km/hr (accelerator pressed) and not that I can only press it when the car is at standstill before takeoff?
From what you said, I think its ok but I like to confirm since I don't wamt to do it wrongly.
Likewise, can I only shift to 2 or L only when the car is stopped or at low speed or break must be pressed?
thanks!!
Depending on the car model, different tranmission are being used and some can react to amount of pressure on yr pedal and might not nid the OD to come in.. but OD is immediate action.. pedal pressure got delay.
For 2 or Low gear, it should be used when stationary or at relatively lower speed, road speed of about 60 to max 70km/hr.. cos u dont want a ticket from the TP when playing with yr gears..
Generally, Gear 1 ard 2k to 3k rpm should be about 20-30km/hr cos max at gear 1 should be ard 50-60km/hr at 5-6k rpm. Gear 2 is ard max at 90-100km/hr at 5-6krpm. so if u at 80km/hr and switch to gear 2, yr rev will go up about 4-5k rpm to match the speed, but without pressing on the pedal, the speed will drop suddenly cos the rev normally stay ard 1-2k rpm without the pedal, so the speed will drop suddenly to 50-60km/hr becos of the rpm drop - or some call it engine braking.... so be careful to make sure there is no cars travelling at yr rear when u try dropping gear...
If still not sure, u may contact me via my msn [email protected] for more immediate responses. -
Thats what I'm trying to tell TS...Haha...Originally posted by Cpt.ZR:Ohh.. dont do it.. it will be the same case when u shift to gear 1 in a manual car when going at 60... It will jerk suddenly and engine will suddenly REV damn high..
Scary...
Tried and tested on a camry 2.4!
Last time I did a 50kph in Gear 4 to Gear 2 cos wanna engine brake...Rev very high, but never jerk much cos I never fully release clutch...Lucky ar...Haha...
I did that with a SAF Mazda Mini-bus...Thats why Gear 4 still 50kph... -
Thanks Friends!
I learnt driving using manual car and my car is auto. That is why I not completely sure about auto gears. I like this forum. There are many helpful forummers and I am glad to become a junior member.
In manual, there is a clutch to handle when shifting gears.
In Auto , there is no visible clutch to operate by driver.
Another scenario : lets say I am driving at 80kph, D mode, and suddenly see a high slope to climb. Am I right to say I can engage the gear 2 to climb this by 1st reducing the speed to Gear 2 level ? Or should I use OD mode for climbing? I am not clear how the auto system switch between gears as I cannot see or control the clutch. And thus I am concerned about gear / engine damage when shifting gears, for example, when climbing slope when the car is not starting at gear 1 or 2 but at gear D 60-80kph.
Can I also say that gear shifting is ok in auto gear as long as I match the gear with the car speed at time of shift?
Lastly, is it not advisable to use the OD frequently even when it is used appropriately like at the right situation?
Thanks again Friends !!
Regards
R. -
i dun think u need to change to lower gears bah. singapore dun haf such steep slopes until 80km/hr ur auto car cannot climb. if u're on a steep slope off a cash card gantry or something, perhaps u might wanna engage lower gear to climb and proceed to D when u're done with the slope.
i wished i'm driving an auto.
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aye,... I think your auto gear will know how to drop to a lower gear when your car gets on an upslope, so no need to use "2" or OD... and no worries about damaging your gears...Originally posted by reddressman:Thanks Friends!
Another scenario : lets say I am driving at 80kph, D mode, and suddenly see a high slope to climb. Am I right to say I can engage the gear 2 to climb this by 1st reducing the speed to Gear 2 level ? Or should I use OD mode for climbing? I am not clear how the auto system switch between gears as I cannot see or control the clutch. And thus I am concerned about gear / engine damage when shifting gears, for example, when climbing slope when the car is not starting at gear 1 or 2 but at gear D 60-80kph.
Can I also say that gear shifting is ok in auto gear as long as I match the gear with the car speed at time of shift?
Lastly, is it not advisable to use the OD frequently even when it is used appropriately like at the right situation?
Thanks again Friends !!
Just wanted to say that I've destroyed a gear box once by shifting to "2" while running a high speed... so take care!
I guess OD would wear out your engine faster lah,... it's like always dragging your gears for a manual txn,... -
sometimes when you wanna have engine braking while doing a downslope, the OD is pretty useful.
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OD is not always useful....sometime is
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double tab on accelerator?? i tot tat's only for beemers? i tried a double tab on a 320 before n it picked up speed real fast.. but on toyota doesn't seemed to hv any effect??Originally posted by so_nice:or, u can do a double tab on ur accelerator. auto still can play one. just see how u play lor. -
Most auto box dun need double tap, just apply more pressure suddenly on accelerator..the gearbox will detect it and think that you want a downshift, so it will downshift a gear for you and you will accelerate faster..or if the auto box got manual override function, even better!Originally posted by kerts:double tab on accelerator?? i tot tat's only for beemers? i tried a double tab on a 320 before n it picked up speed real fast.. but on toyota doesn't seemed to hv any effect??
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yeah. wat alleggerita said was more correct. anyway kerts, u driving vios? wat i did on a vios auto was to whack the rpm until 5k+, release and do it again. the pick up not bad lah. not rex or evo performance of course.Originally posted by alleggerita:Most auto box dun need double tap, just apply more pressure suddenly on accelerator..the gearbox will detect it and think that you want a downshift, so it will downshift a gear for you and you will accelerate faster..or if the auto box got manual override function, even better! -
y u all so wrong... OD is overdrive, which means if on, the gearbox will use the 4th or 5th gear.. something like cruising..
OD if off means it will use till gear3 if u have 4 gears and if u have 5gears, it wil use til gear4..
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Ya lor, I was thinking of that too..OD means use highest gear to save fuel..Originally posted by HolySniper:y u all so wrong... OD is overdrive, which means if on, the gearbox will use the 4th or 5th gear.. something like cruising..
OD if off means it will use till gear3 if u have 4 gears and if u have 5gears, it wil use til gear4..
But most auto gearbox don't have OD leh..my uncle's Volvo S40's 5-speed auto gearbox no OD..but it can still go all the way to the fifth gear.. -
yep wat u say is true, but hor, last time i tested e 320 beemer owned by a german, he told me abt e "double tab" n i tried it to be correct like wat he says. Needs abit of experience to get it right.Originally posted by alleggerita:Most auto box dun need double tap, just apply more pressure suddenly on accelerator..the gearbox will detect it and think that you want a downshift, so it will downshift a gear for you and you will accelerate faster..or if the auto box got manual override function, even better!
When i jus floor e accelerator e speed was like picking up slightly fast, but when i tried e "double tab", i took 2-3 tries to get it right, e pickup was very very fast, so I knew it had to b enable by double tapping. But i dunno if it goes for other makes of cars.. I tried on my car it wasn't very obvious such tt i dunno whether it was jus "flooring" or "tap" -
i'm driving a seo, pickup decent, mayb i can hv a friendly race wif u somedayOriginally posted by so_nice:yeah. wat alleggerita said was more correct. anyway kerts, u driving vios? wat i did on a vios auto was to whack the rpm until 5k+, release and do it again. the pick up not bad lah. not rex or evo performance of course. -
TS, btw wat auto car u driving?
hmm... juz share wif u guys wat i noe abt toyota.
Overdrive is to be on-ed at all times for fuel efficiency, off it under conditions such as towing another vehicle.
if u want fast pickup, higher revs, use the ECT or Super ECT (depending on the make of ur toyota).
many toyota drivers do not noe abt this ECT or Super ECT n thus do not utilise it. the ECT or Super ECT is extremely useful in msia when u wanna overtake another car fast.
u can oso try switching on the ECT or Super ECT n then try accelerate from 0 to 100km/hr, u will be able to rev till 6 - 7k rpm easily but better dun whack too hard. u will be surprised how fast an altis or camry can accelerate. -
seriously drive auto car in singapore, basically u onli need to know hw to shift to D, P, R and N. onli if coming down from steep slope like what other seniors said above, genting highlands, it's best to engage gear 2. it has higher power n thus more engine brake. in D mode, if e car realise it is picking up speed as e car slides down e slope, it will automatically engage a higher gear n goes on. in tis case, there is not much control of e car as no engine brake. tis is why u see so many reports on pple crashing when driving down genting highland. see, for certain car double tap does auto drop one gear n give u stronger boost. if it can't work for ur car den try to floor e accelator, e car will sense it after like 1 or 2 sec depending on hw gd ur car is. for some auto cars, there is tis mode call e DS. a small S sign beside e D. it will also boost ur car too.