AT walang gearshifting sa palusong

**fordman** · December 4th, 2012 08:08 PM

Hello tsikoteers,tanong ko lang bakit ang sasakyan ko hindi nagdodownshift kung palusong kalsada steady cia sa high speed kaya laging nakaalalay paa sa preno kasi mabilis.apak bitaw gawa ko hindi nagbabago gear nya parang nakaneutral walang engine break maliban kung ilagay ko sa 2 medyo babagal.ok lang ba ito o may problema kasi maayos naman hatak sa akyatan at rekta naggegearshift ciya.sa pababa lang.toyota lite ace 2c-turbo makina ko.salamat kung may ishare kayo tungkol dito

**fourtheboys96** · December 4th, 2012 08:33 PM

Originally Posted by fordman

Hello tsikoteers,tanong ko lang bakit ang sasakyan ko hindi nagdodownshift kung palusong kalsada steady cia sa high speed kaya laging nakaalalay paa sa preno kasi mabilis.apak bitaw gawa ko hindi nagbabago gear nya parang nakaneutral walang engine break maliban kung ilagay ko sa 2 medyo babagal.ok lang ba ito o may problema kasi maayos naman hatak sa akyatan at rekta naggegearshift ciya.sa pababa lang.toyota lite ace 2c-turbo makina ko.salamat kung may ishare kayo tungkol dito

hindi talaga siya magda-downshift. normal yang nangyayari sa kotse mo.

pag palusong, lagay mo kambiyo sa D3 or D2 para hindi maubos preno mo.

**yebo** · December 4th, 2012 08:43 PM

yup, di yan magda-down shift automatically. you need to shift to L2 or L3. kahit sa mga tiptronic na A/T need mag-manual mode at gamitin yung +/- para mag-down shift.

never rely on your brakes alone. always use low gear, especially pag long downhill drive.

**Type 100** · December 4th, 2012 09:16 PM

Originally Posted by fordman

Hello tsikoteers,tanong ko lang bakit ang sasakyan ko hindi nagdodownshift kung palusong kalsada steady cia sa high speed kaya laging nakaalalay paa sa preno kasi mabilis.apak bitaw gawa ko hindi nagbabago gear nya parang nakaneutral walang engine break maliban kung ilagay ko sa 2 medyo babagal.ok lang ba ito o may problema kasi maayos naman hatak sa akyatan at rekta naggegearshift ciya.sa pababa lang.toyota lite ace 2c-turbo makina ko.salamat kung may ishare kayo tungkol dito

Is this your first vehicle with an automatic transmission? This is 100% normal.

"Automatic" doesn't mean "intelligent" - without driver input, the transmission will just use the highest gear it can because it is "programmed" that way.

Every notch on your shift lever is a program.
This is why you have a shift lever you can put into 2 or L.
If you leave the lever in D, it will use all the available forward gears and it will NEVER engine-brake for you.
Shifting to 2 programs the transmission to use only first and second gear, nothing higher.
Shifting to L programs the transmission to use first gear and nothing else.

Moving the lever from D to 2 will give you engine braking that will be enough for most situations.

**fordman** · December 4th, 2012 09:23 PM

Hay salamat sa info akala ko pareho pag paakyat naggegearshift din cya.oo ganun ginagawa ko na nilalagay ko sa 2.okay lang ba magshift sa 2 habang tumatakbo sasakyan o kelangan fullstop?nagugulohan pa kasi ako.salamat uli

**fordman** · December 4th, 2012 09:29 PM

Thank you!ganun pala.at least naluwagan isip ko sa ganitong sitwasyun.akala ko nga parang sa akyatan na kusang naggegearshift.

**jut703** · December 4th, 2012 09:45 PM

It all depends on how your ECU adjusted to your driving style. It's normal for a car to hold its gear even on downhill slopes if it feels that's the best match for your driving style. It's also possible that it's not in the algorithm of the ECU to even consider downshifting for engine braking.

In my experience with our Altis, it downshifts when I'm on a downhill slope and I give the brake pedal a slight trod as long as I'm between 60-100 kph.

**oj88** · December 4th, 2012 09:48 PM

Originally Posted by Type 100

Is this your first vehicle with an automatic transmission? This is 100% normal.

"Automatic" doesn't mean "intelligent" - without driver input, the transmission will just use the highest gear it can because it is "programmed" that way.

Every notch on your shift lever is a program.
This is why you have a shift lever you can put into 2 or L.
If you leave the lever in D, it will use all the available forward gears and it will NEVER engine-brake for you.
Shifting to 2 programs the transmission to use only first and second gear, nothing higher.
Shifting to L programs the transmission to use first gear and nothing else.

Moving the lever from D to 2 will give you engine braking that will be enough for most situations.

Not true for all cars.

Specifically on the Honda 5A/T (found on the 8th & 9th Gen Civic and 2nd Gen Jazz):
1. It will downshift under certain conditions - ie. when it senses the car speeding up with the brakes applied like when rolling downhill. Honda calls this "Grade Logic". Models with the cruise control set makes use of this feature to prevent overspeeding on long downhill roads.
2. When "2" is selected, it is locked on 2nd gear. It doesn't shift up or down. Typically used when accelerating on very slippery surfaces to prevent wheel spin.

**fordman** · December 5th, 2012 06:40 AM

Hehe now i know.nasanay kaso ako sa manual.ngaun lang ako gumamit AT kasi ito gusto ni misis para matuto ciya agad.

**CVT** · December 5th, 2012 08:09 AM

Originally Posted by fordman

Hay salamat sa info akala ko pareho pag paakyat naggegearshift din cya.oo ganun ginagawa ko na nilalagay ko sa 2.okay lang ba magshift sa 2 habang tumatakbo sasakyan o kelangan fullstop?nagugulohan pa kasi ako.salamat uli

For you to "downshift" to D3 or D2 or L, you need to be within a certain maximum speed for each case. Consult your vehicle manual on this.

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