Gear change in AT
01-13-2005, 03:07 PM
#1
Gear change in AT
When i drive, my gears dont change very fast.. it always goes up until 2500+ RPM. usually 3000-/+. I think that's normal BUT when I go downhill with around 40mph with no gas pushed, shouldn't the gear change to 5th and keep the RPM low? it always stays at 4 if it's around 40mph, car needs to be 42mph+ to go into 5th. it's annoying because not only it slows down the car in 4th, but uses more gas.
does anyone feel the same?
does anyone feel the same?
01-13-2005, 04:33 PM
#3
Team Owner
You may be experiencing Acura's technology for maintaining downhill speed. I think they call it "hill hold" or "downhill hold" or something like that. Essentially the car will sense that you are going downhill and try to maintain your speed instead of letting it freewheel and gain speed.
01-13-2005, 04:35 PM
#4
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Originally Posted by jlukja
You may be experiencing Acura's technology for maintaining downhill speed. I think they call it "hill hold" or "downhill hold" or something like that. Essentially the car will sense that you are going downhill and try to maintain your speed instead of letting it freewheel and gain speed.
I noticed that with my auto TL.
01-13-2005, 04:40 PM
#5
Team Owner
Here it is:
Is this what you are experiencing?^^
Grade Logic Control alters the 5-speed automatic's shift schedule when traveling uphill or downhill, reducing shift frequency, and improving speed control. Throttle position, vehicle speed and acceleration/deceleration are continuously measured, then compared with a map stored in the transmission computer. The Grade Logic Control System then determines when the car is on a hill; if this is the case, the shift schedule is adjusted to automatically hold the transmission in a lower gear for better climbing power or increased downhill engine braking.
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01-13-2005, 08:04 PM
#8
Photography Nerd
Originally Posted by n3ok318
dang, thanks! yes that's exactly what i am experiencing. but i'd rather hit on brakes than having higher rpm. higher rpm, more noise.
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