What Are the Reasons for Difficulty in Acceleration in Automatic Transmission Cars?

1 Answers
ElijahDella
07/30/25 3:00am
Automatic transmission cars may experience difficulty in acceleration due to engine malfunctions, transmission failures, or excessively dirty components. Below are the specific causes and solutions for acceleration difficulties in automatic transmission cars: Specific causes of acceleration difficulties in automatic transmission cars: Engine malfunction: Park the car on level ground, place the transmission lever in the P position, engage the handbrake, and press the accelerator pedal to check the engine's acceleration performance. If the engine speed increases slowly or fails to rise beyond a certain point, the issue may stem from the engine. Inspect the engine's fuel supply pressure, cylinder pressure, the proper functioning of the fuel injection system, and the sensors. Transmission failure: This could be due to severely worn or burnt friction plates inside the transmission, or malfunctions in the transmission valve body's shift valves, solenoid valves, transmission control computer, and related circuits, leading to difficulties in upshifting and acceleration. Solutions for acceleration difficulties in automatic transmission cars: Use an automotive diagnostic computer to check for any fault codes; resolving these faults can fix the issue. Inspect the vehicle's spark plugs for erosion and replace them promptly if damaged. Check the cleanliness of the vehicle's air filter and throttle body; excessive dirt can cause inaccurate throttle position signals, necessitating cleaning of the air filter and throttle body.
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