What Causes Engine Automatic Acceleration?

[Shelby]

Engine automatic acceleration may be caused by the following reasons: 1. A severely dirty throttle with excessive carbon buildup can lead to unstable idle control and occasional automatic engine speed increases; Solution: Clean the throttle. 2. Electromagnetic interference in the electronic control system may disrupt the voltage signal from the accelerator pedal, causing unstable signals and affecting engine speed control; Solution: Repair the electronic control system and avoid interference. The causes of engine surging are as follows: 1. Excessive engine idle speed. 2. Improper adjustment of the throttle cable or throttle position sensor, resulting in excessively high main oil pressure. 3. Delayed upshifting. 4. Cracked or loose vacuum hose of the vacuum throttle valve. 5. Malfunction of the main oil pressure regulator, causing excessively high main oil pressure. 6. Stuck damper piston, failing to provide damping. 7. Missing one-way valve steel ball, causing the shift actuator (clutch or brake) to engage too quickly. 8. Slipping shift actuator. 9. Non-functional oil pressure solenoid valve. 10. Faulty computer.