What Causes No Power When Pressing the Accelerator?
2 Answers
Experiencing a sudden loss of power when pressing the accelerator could be due to a fuel pump issue. Below are the possible reasons for sudden power loss when accelerating: 1. Accelerator pedal position sensor failure. For example: sensor damage (open or short circuit). 2. Throttle body malfunction. For instance: excessive dirt or sticking. 3. Spark plug ignition failure. Such as: poor ignition or no ignition, leading to no response when accelerating. 4. Certain switch-type electrical components. For example: connected parts in specific models like the brake switch (signal), which requires inspection based on the specific vehicle model. 5. Throttle position sensor failure. For instance: the sensor itself is damaged or fails to receive signals due to wiring issues. 6. Ignition system components like the distributor, ignition coil, or high-voltage wires malfunction. For example: leakage, aging, or quality issues in these parts can cause poor ignition and no response when accelerating.
I've driven many cars, and when encountering situations where the throttle doesn't respond, it's mostly due to engine system issues. For example, a clogged fuel system or a faulty fuel pump failing to supply enough fuel can lead to power loss. Or when the air filter is too dirty, restricting air intake and causing incomplete combustion. Ignition system failures like spark plugs not firing are also common. Once when I was driving an older car on the highway and suddenly lost power, it turned out to be caused by aging ignition coils, which was resolved by replacing them. Regular maintenance is crucial—changing the oil and cleaning filters on time. Otherwise, small issues can accumulate and become troublesome, affecting driving safety. It's best to visit a professional repair shop for diagnosis as soon as any abnormality is noticed.
