Hitting the Rev Limiter - Is it bad?
#18
Lead Lap
Throw it into manual mode with the shift *** (not the paddle shifters) and you can bounce that needle all day if you want. It is not good for the engine or transmission however, so don't do it too much if you plan on keeping the car.
#19
Lexus Test Driver
I think the GS 350 engine has a redline of 6,600 RPM with the rev limiter set at the 6,600 RPM redline for fuel cutoff. The GS 350 transmission upshifts at 6,400 RPM - or 200 RPM below redline.
~~~~~~~~~~~~~~~~~~~~~
DRIVETRAIN
Configuration: Longitudinal, front-engine, rear-wheel drive
Engine type: Naturally aspirated, direct- and port-injected V6, gasoline
Displacement (cc/cu-in): 3,456/211
Block/head material: Aluminum/aluminum
Valvetrain: DOHC, 4 valves per cylinder, variable intake + exhaust-valve timing
Compression ratio (x:1): 11.8
Redline, indicated (rpm): 6,600
Fuel cutoff/rev limiter (rpm): Shifts at 6,400
Horsepower (hp @ rpm): 306 @ 6,400
Torque (lb-ft @ rpm): 277 @ 4,800
Fuel type: 91-octane required
Transmission type: Six-speed automatic with console shifter and steering-mounted paddles with sport/competition modes
Transmission ratios (x:1): I = 3.52; II = 2.04; III = 1.40; IV = 1.00; V = 0.72; VI = 0.59; R = 3.22
Final-drive ratio (x:1): 3.62
~~~~~~~~~~~~~~~~~~~~~
DRIVETRAIN
Configuration: Longitudinal, front-engine, rear-wheel drive
Engine type: Naturally aspirated, direct- and port-injected V6, gasoline
Displacement (cc/cu-in): 3,456/211
Block/head material: Aluminum/aluminum
Valvetrain: DOHC, 4 valves per cylinder, variable intake + exhaust-valve timing
Compression ratio (x:1): 11.8
Redline, indicated (rpm): 6,600
Fuel cutoff/rev limiter (rpm): Shifts at 6,400
Horsepower (hp @ rpm): 306 @ 6,400
Torque (lb-ft @ rpm): 277 @ 4,800
Fuel type: 91-octane required
Transmission type: Six-speed automatic with console shifter and steering-mounted paddles with sport/competition modes
Transmission ratios (x:1): I = 3.52; II = 2.04; III = 1.40; IV = 1.00; V = 0.72; VI = 0.59; R = 3.22
Final-drive ratio (x:1): 3.62
#20
Lexus Test Driver
– A “–” shift when vehicle speed decreases.
– When the temperature of automatic transmission fluid and engine coolant drops, shifting is conducted based on a
low oil temperature shifting pattern.
– When the automatic transmission fluid temperature is high, automatic shifting is performed.
– When the engine speed reaches the redline, gear shifting is conducted automatically.
Reference (See Page 71)
#21
Lead Lap
Automatic shifting is conducted in the following cases, even when in M mode:
– A “–” shift when vehicle speed decreases.
– When the temperature of automatic transmission fluid and engine coolant drops, shifting is conducted based on a
low oil temperature shifting pattern.
– When the automatic transmission fluid temperature is high, automatic shifting is performed.
– When the engine speed reaches the redline, gear shifting is conducted automatically.
Reference (See Page 71)
– A “–” shift when vehicle speed decreases.
– When the temperature of automatic transmission fluid and engine coolant drops, shifting is conducted based on a
low oil temperature shifting pattern.
– When the automatic transmission fluid temperature is high, automatic shifting is performed.
– When the engine speed reaches the redline, gear shifting is conducted automatically.
Reference (See Page 71)
#22
Lexus Test Driver
Thread Starter
I was driving in M mode and it still upshifts at redline. But I was maxing out on 2nd gear though then it shifts to 3rd at redline. Maybe it'll bounce at 1st gear only?
#24
Lexus Test Driver
Thread Starter
This car redlines so quick! Once u go past 4K the needle just flies.
#25
Instructor
Maby they revised how our transmission behaves in the 2014+ GSs? I just tried this in my way to work. From a standing stop i put the shift lever over to the left to M mode and using only the paddle shifter it will not automatically shift unless i tell it to, no matter what gear i am in. I tied the same thing again with M mode but use the shift levers + an - to shift and i get the same result. The only time my transmission upshifts automatically for me is when I use the paddle shifters in D mode. With M mode i can hit the rev limiter all day in any gear. Keep in mine i always have sport+ enabled during all these tests.
#26
Lexus Test Driver
Thread Starter
I wanna try this so bad but gas is already at $3 here.
#27
Lexus Champion
If the GS is like the 3IS, you have about half the owners (of 2014 models) stating that their cars will automatically shift at the limiter and the other half stating that theirs won't. (Mine shifts automatically)
Many believe there must have been a software change somewhere along the production line.
It's probably worth stating whether you have the 6 speed or 8 speed.
Many believe there must have been a software change somewhere along the production line.
It's probably worth stating whether you have the 6 speed or 8 speed.
#28
Lexus Champion
If the GS is like the 3IS, you have about half the owners (of 2014 models) stating that their cars will automatically shift at the limiter and the other half stating that theirs won't. (Mine shifts automatically) Many believe there must have been a software change somewhere along the production line. It's probably worth stating whether you have the 6 speed or 8 speed.
#29
Lexus Test Driver
Thread Starter
My 2011 Camry shifts at redline when in manual mode too.