Why can't the car accelerate when starting?

[Gerald]

The reasons why the car suddenly cannot accelerate are as follows: Fuel line blockage: Excessive fuel flow rate can cause blockage at the pipe opening, and the obstacle will retract when the throttle is released. Fuel filter issue: The fuel filter has quality problems and is not smooth. Fuel pipe bending: The fuel pipe is bent, leading to insufficient fuel supply at high throttle. ECU problem: The ECU has issues and needs to be checked with a diagnostic tool at a 4S shop. Fuel quality problem: The gasoline quality is poor, containing too much water. Check the throttle body: This involves checking the condition of the throttle body, which is a control system composed of an integrated circuit board. Malfunctions can also cause no response when accelerating.

[LeSkylar]

I've also experienced the issue of not being able to accelerate when starting. At that time, while driving, I felt that when I stepped on the gas pedal, the engine didn't respond, and the car couldn't move. The problem might lie with the position sensor of the throttle pedal; if it's broken, the signal won't reach the computer, and the car won't know you want to accelerate. Or it could be due to a clogged fuel line, insufficient fuel pump pressure, preventing fuel from reaching the engine. Another possibility is a dirty air filter, causing insufficient air intake and poor combustion. In my case, it was a sensor malfunction, which was later diagnosed at a repair shop. It cost a few hundred to replace, and the improvement was immediate. Regular maintenance while driving, such as periodic checks of the fuel system and sensors, can prevent such issues. Otherwise, it's not only inconvenient but also dangerous, especially if you get stuck on the road.

[DelNova]

As someone who has driven various cars, there are several common factors that can make the accelerator pedal feel unresponsive during startup. First, insufficient fuel pump pressure leads to low gasoline flow and inadequate fuel supply. Second, worn-out spark plugs result in weak ignition, affecting power output. Third, there might be an error in the throttle cable or the Electronic Control Unit (ECU) signal, causing it to misinterpret acceleration commands. My old car once had an ECU issue, and after fixing it, the acceleration became much smoother. It's also advisable to check the battery voltage first, as low voltage can cause overall sluggish response. In short, don't ignore minor issues—early repairs save both peace of mind and safety, preventing roadside breakdowns.

[LukasDella]

I've been driving for many years, and it's quite common to experience difficulty in accelerating when starting the car. Usually, it's due to issues with the fuel system or ignition system, such as an aging fuel pump or a clogged filter preventing fuel from entering. A simple method is to check if the air intake pipe is clean; if it's dirty, take it apart and clean it. Spark plugs are also consumable parts, and over time, weak ignition can affect power. Remember not to force it, as it can easily damage the engine. When encountering this situation, I usually turn off the engine and wait a few minutes before trying again. If that doesn't work, I call a mechanic to handle it, which doesn't take too much time.