Masama ba mag shift s neutral in high speed?

[Emmanuel18]

mga tsikoteers, help naman..

Ang gamit ko 96' Honda Civic AT VTi.. medyo mataas n kasi gasolina ngaun eh kaya gumagawa na lng ako ng paraan makatipid.

Masama b mag shift ng Neutral habang tumatakbo ng mabilis ang kotse tapos lagay ko ulit s drive(D4) kpag kelangan ko na tapakan ung gas?.. tingin ko nman nakakatipid kaso ang takot ko lang baka naman masira ung transmission ko.

thanks

[pitbullz]

masama kapag babalik ka na sa gear then nag downshift ka pala. nakakalito sa kapwa driver.

[mazingerZ]

Well for one your braking distance will be longer, since you could not harness engine braking since nakaneutral ka. . .

[Type 100]

Oo masama siya.

Think about it this way: would you rather save a few bucks on fuel to risk failure to brake in time because you didn't engage engine braking? Nakatipid ka nga sa gas pero gagastusin mo naman ang damage ng bangga...

The only time you engage neutral is when you're almost at a stop.

[Emmanuel18]

tingin ko kc maliit lng konsumo s gasolina kapag nilalagay ko s Neutral habang nag freewheel ung kotse kesa hayaan ko lang cia s drive.. Inaalala ko lang ung tranny ko..

magbakasyon kc kami s leyte and almost 650km papunta p lang dun balik p kmi ng manila kaya kelangan ko sana makagawa ng paraan para mapatipid ko konsumo ko sa gasoline..

[CVT]

tingin ko kc maliit lng konsumo s gasolina kapag nilalagay ko s Neutral habang nag freewheel ung kotse kesa hayaan ko lang cia s drive.. Inaalala ko lang ung tranny ko..

magbakasyon kc kami s leyte and almost 650km papunta p lang dun balik p kmi ng manila kaya kelangan ko sana makagawa ng paraan para mapatipid ko konsumo ko sa gasoline..

Don't risk it bro.- Never engage the 'angel gear' when driving at high speed. It can be fatal...

5808:bee:

[userfriendly]

if you want to save fuel by coasting, keep your tranny in D and just lift your foot from the gas pedal. With EFI's halos walng consumo pag di ka nakatapak sa gas pedal.

Not sure if masama mag shift to N from D at speed. pero better safe than sorry. Mura ang gas compared to a new tranny.

[mbeige]

Drive to Neutral = OK
Neutral at high speed to Drive = BAD

This is because the automatic transmission is not a manual, and the clutch bands will wear out easily when you shift from N to D at speed. The reason behind this is because when you're at speed the engine is at a certain RPM, depending on what gear you're in. When you shift to N, it reverts back to idle engine speed which is around 700RPM. Now, when you shift back into D, the gears and momentum will force the transmission to spin faster in order to retain its given momentum (remember first law of physics). So the parts that will absorb the brunt will be the clutch packs and torque converter and they don't like being slammed like that unlike manual transmission clutches, which can handle the "neutral drop" as they call it.

So only shift to N when you're SURE you'll be coasting to a stop, but if the light suddenly turns green and you still have momentum, you need to step on the accelerator to match the previous engine speed at that given vehicle speed (so you must know your car very well) in order to SAFELY shift from N to D.

[Type 100]

Drive to Neutral = OK
Neutral at high speed to Drive = BAD

This is because the automatic transmission is not a manual, and the clutch bands will wear out easily when you shift from N to D at speed. The reason behind this is because when you're at speed the engine is at a certain RPM, depending on what gear you're in. When you shift to N, it reverts back to idle engine speed which is around 700RPM. Now, when you shift back into D, the gears and momentum will force the transmission to spin faster in order to retain its given momentum (remember first law of physics). So the parts that will absorb the brunt will be the clutch packs and torque converter and they don't like being slammed like that unlike manual transmission clutches, which can handle the "neutral drop" as they call it.

So only shift to N when you're SURE you'll be coasting to a stop, but if the light suddenly turns green and you still have momentum, you need to step on the accelerator to match the previous engine speed at that given vehicle speed (so you must know your car very well) in order to SAFELY shift from N to D.

Rev-matching or throttle-blipping on an automatic? Hmmm...pwede pala yun.

Sigurado bang no damage to the tranny if you do this?

[meledson]

Drive to Neutral = OK
Neutral at high speed to Drive = BAD

This is because the automatic transmission is not a manual, and the clutch bands will wear out easily when you shift from N to D at speed. The reason behind this is because when you're at speed the engine is at a certain RPM, depending on what gear you're in. When you shift to N, it reverts back to idle engine speed which is around 700RPM. Now, when you shift back into D, the gears and momentum will force the transmission to spin faster in order to retain its given momentum (remember first law of physics). So the parts that will absorb the brunt will be the clutch packs and torque converter and they don't like being slammed like that unlike manual transmission clutches, which can handle the "neutral drop" as they call it.

So only shift to N when you're SURE you'll be coasting to a stop, but if the light suddenly turns green and you still have momentum, you need to step on the accelerator to match the previous engine speed at that given vehicle speed (so you must know your car very well) in order to SAFELY shift from N to D.

Wow. Aray.

Thanks for the info. I do not know this.

[mbeige]

I'm actually not sure if rev-matching works, never had the courage to do it on my car though I've coasted a few times and yes, your braking distance is longer due to the lack of engine braking. Thing is, I'd rather do that to minimize the difference between engine RPM and actual RPM when the transmission finally selects its appropriate gear, rather than directly slam it in D when I'm coasting and at speed with the engine simply idling.

I've read many threads on certain boards that doing "neutral drops" (like jackrabbit starting a car, dropping the shifter to D while maintaining high RPM, to make the tires squeal, in an automatic transmission vehicle - like what some do with manual transmissions when they want better acceleration off the line) will kill the transmission. It's basically the same principle, because you're forcing the transmission to jump from idle speed (coasting in neutral) to its matched engine speed when it's finally in gear.

Maybe more experienced people can shed more light but as far as I'm concerned I'd rather not risk it, if all it takes is more gentle pedaling of the accelerator, changing driving manners, etc to obtain optimal fuel economy.

[v6dreamer]

mga tsikoteers, help naman..

Ang gamit ko 96' Honda Civic AT VTi.. medyo mataas n kasi gasolina ngaun eh kaya gumagawa na lng ako ng paraan makatipid.

Masama b mag shift ng Neutral habang tumatakbo ng mabilis ang kotse tapos lagay ko ulit s drive(D4) kpag kelangan ko na tapakan ung gas?.. tingin ko nman nakakatipid kaso ang takot ko lang baka naman masira ung transmission ko.

thanks

Kaya pala ang daming problema na A/T diyan dahil ginagawa niyong manual ang auto tranny. This is a lesson into any driver w/ auto tranny, to read your operation manual before getting into that wheel. Driving a car is not about left or right, its an arts.