What Causes Sudden Loss of Acceleration Power at High Speeds in a Car?
3 Answers
Car suddenly losing acceleration power at high speeds can be attributed to the following reasons: Poor fuel quality leading to insufficient acceleration. Clogged fuel injectors, etc.: Clogged fuel filter, clogged fuel injectors, aging fuel pump. Solutions are as follows: Exhaust system modification: Replace the mid and rear sections of the exhaust pipe to allow air to enter the engine more quickly, thereby enhancing engine power. Tire modification: Tire modification is simpler than exhaust system modification. While widening the rims and tires, do not strictly adhere to the vehicle's specified adjustment values, as this may affect the normal operation of other vehicle components. Engine intake system modification: Primarily aimed at increasing engine displacement and improving air charging efficiency to boost engine power. Alternatively, the car's air filter can be directly modified.
I was driving at high speed when suddenly I felt that pressing the accelerator didn't increase the speed, as if the car couldn't move anymore. This situation is quite common. The most likely issue is with the fuel system, such as an aging fuel pump not supplying fuel or a clogged fuel filter with too much debris, preventing fuel from entering the engine and causing a lack of power. Additionally, if the air filter hasn't been replaced for a long time and dust has accumulated, it can lead to poor airflow and insufficient engine combustion, making the car feel sluggish. If the spark plugs have too much carbon buildup or the gap has widened, causing poor ignition, acceleration will also be weak. I once experienced a similar issue, and replacing the fuel pump solved the problem. Safety is important—if you notice this happening, slow down and pull over instead of pushing through. It's best to visit a repair shop for a computer diagnosis to identify the specific cause and prevent similar failures in the future.
When driving at high speeds, sudden loss of acceleration power makes the car feel like it's being dragged, which may be related to electronic system failures. If the throttle position sensor malfunctions, the computer can't control the throttle opening, leading to inaccurate fuel injection and reduced engine efficiency. Additionally, a faulty oxygen sensor providing incorrect feedback can cause an imbalance in the air-fuel mixture, or an ECU error causing chaotic commands can make the car accelerate sluggishly. My previous car had this issue, and reprogramming the control module fixed it. Poor wiring connections or short circuits could also lead to this situation. It's advisable to stop and check the fuses and plug connections rather than continuing the journey, to avoid causing more serious problems.
