Can the throttle be released quickly?

[LeFinn]

Throttle cannot be released quickly. Here are the relevant explanations: 1. Reason: When the throttle is completely released, the fuel supply reaches its minimum limit. While driving, the throttle can only be fully released when the transmission is shifted back to neutral. At this time, the vehicle moves forward by inertia. Otherwise, driving at idle speed in a high gear will not only stall the vehicle but also cause the vehicle to stop suddenly, damaging the transmission and potentially leading to rear-end collisions on the road. 2. Throttle: The throttle, also known as the "air throttle" or "throttle valve," refers to the control device that regulates the engine power (thrust). In piston aircraft engines, the throttle controls the opening of the carburetor's throttle valve to regulate the cylinder's filling volume, thereby determining the engine's output power. In gas turbine engines, the throttle controls the metered fuel flow of the fuel regulator, thus determining the thrust produced by the engine.

[DeAaliyah]

When I was taking my driver's license test, the instructor repeatedly emphasized not to suddenly release the accelerator pedal as if electrocuted! Especially with a manual transmission car, during my initial practice for Subject 3, I once abruptly let go of the accelerator, causing the car to lurch forward and then jerk back violently, even knocking over the water bottles of the passengers in the back. The instructor shouted loudly: the accelerator pedal should be lifted off gradually, unless you need to brake suddenly and press the clutch. This control ability directly determines ride comfort, and suddenly releasing the accelerator can cause fuel control disorder, leading to a sudden spike in instantaneous fuel consumption and damaging the engine. Remember, maintaining steady control is most important. When cruising on the highway and encountering a slowing car ahead, I always start gently lifting the accelerator 200 meters in advance to slow down.

[QuinnRose]

From a mechanical control perspective, suddenly releasing the throttle isn't considered a mechanical failure, but it's certainly not a good habit. This is especially noticeable in electronic throttle models - when your foot abruptly leaves the pedal, the engine control unit (ECU) needs reaction time to adjust the throttle opening. The power interruption feels like being rear-ended, causing the car to lurch forward. Our engineers' tests showed the air-fuel ratio fluctuating violently three times within 0.3 seconds, with combustion efficiency dropping sharply by 20%. On icy roads, this maneuver is even more dangerous - rear-wheel drive vehicles will immediately trigger ESP intervention. For daily driving, imagine having a sponge between your foot and the throttle - using your heel as a pivot point to gradually release pressure is the safest approach.

[Sam]

Having driven a taxi for over a decade, I’ve got plenty to say about this. Last year, I picked up three college students heading to the airport. The guy in a hurry took the wheel himself and floored the gas pedal after the toll booth, then abruptly let off—so much so that the passengers filled their plastic bags with vomit. As for jerky gear shifts, it all comes down to managing the RPM drop. In a manual car, if you release the throttle without pressing the clutch, the engine RPM plummets from 3,000 to 1,000 in an instant. The crankshaft, still linked to the transmission, yanks hard on the wheels, making the driveshaft groan. Even in an automatic, where the computer tries to compensate with throttle blips, if the torque converter is locked and the fuel is suddenly cut, the rearview mirror will shake violently. Passengers lurch forward and backward despite their seatbelts—tell me, how could that be a pleasant experience?

[VanLucia]

Veteran manual transmission drivers all know that the timing of releasing the throttle is even more crucial than pressing it. When downshifting to overtake, you indeed need to quickly lift off the throttle (to allow the engine speed to drop and match the lower gear), but normal deceleration is entirely different! Last week, while helping a friend inspect his old Bora, we found three cracks in the transmission mount bushings—caused by long-term habits of revving up to 3000 rpm and then abruptly releasing the throttle. The rubber damping components were torn apart by torque shocks, and the clunking noise from the chassis was initially mistaken for a loose exhaust pipe. Later, we installed a RPM warning light for him, which turns yellow when exceeding 2000 rpm to remind him to ease off the throttle gently. For all you modified car enthusiasts out there: be decisive with throttle release during launch starts, but never mimic that abruptness in normal driving!

[Evan]

Last month, my husband got angry while accompanying me for driving practice, all because I released the throttle too abruptly. At that time, I was making a turn on a narrow road in our neighborhood, focusing solely on steering and forgetting to control the throttle, causing the front of the car to suddenly veer toward the green belt. He pointed at the dashboard and said, 'Look, the tachometer dropped instantly from 1800 to 800 RPM, creating a torque vacuum that led to insufficient pressure in the power steering pump!' Now, every time I sit in the driver's seat, I consciously keep my right knee slightly bent—this allows the calf muscles to provide cushioning when retracting. A tip for my fellow novice sisters: when your right foot isn't pressing the accelerator, let the sole of your shoe lightly rest on the pedal surface; keeping it completely suspended makes it easier to jerk your leg up abruptly.