What to Do When the Car Doesn't Accelerate Even with the Throttle Fully Pressed?
2 Answers
Solutions for when the car doesn't accelerate even with the throttle fully pressed are: 1. Reposition the floor mat; 2. Replace or repair the throttle pedal; 3. Replace or clean the throttle position sensor; 4. Inspect and clean the car's fuel system; 5. Replace the engine spark plugs. The throttle in a car is located on the right side under the dashboard as the first pedal. The throttle pedal does not directly control the fuel injection amount. Pressing the throttle pedal directly controls the throttle valve, which increases the throttle opening, allowing more air to enter the engine. The ECU then commands the fuel injection system to inject more fuel, increasing the engine's RPM and causing the car to accelerate.
When the throttle is fully pressed but the speed doesn't increase, I think there might be several mechanical issues to check. The most common one is a clogged air filter. When it's dirty, it restricts air intake, and the engine can't suck in enough air, naturally losing power. Replacing it with a new one might solve the problem. Carbon buildup in the throttle body or sensor failure is also common. These can affect throttle signal transmission, and if the ECU control is off, it will limit output. Transmission issues like clutch slippage or sluggish shifting in automatic transmissions can also cause power loss, especially in older cars or those that haven't been serviced for a long time. A clogged catalytic converter in the exhaust pipe can also worsen the situation—I've seen many such cases. I recommend first checking the air filter and fuel line connections yourself, and trying a simple throttle body cleaning. If that doesn't help, take it to a professional shop for a diagnostic scan immediately to avoid dangers on the highway. Don’t slack on regular maintenance—changing the oil and oil filter every 5,000 kilometers can greatly reduce such failures.
