What Causes the Delay in Acceleration When Pressing the Gas Pedal Followed by a Sudden Speed Increase?

[VonJoel]

If pressing the gas pedal doesn't result in immediate acceleration and there's a sudden speed increase after a few seconds, it is likely due to a dirty throttle body. Severe carbon buildup in the throttle body can cause unstable engine idling and, in more serious cases, slow down the engine's power response. This means pressing the gas pedal may not produce an immediate reaction, and acceleration occurs only after a few seconds. Types of Throttle Bodies: 1. Traditional Throttle Body: The throttle control mechanism in traditional engines operates via a cable (flexible steel wire) or rod, connecting one end to the gas pedal and the other to the throttle linkage plate. 2. Electronic Throttle Body: The electronic throttle body primarily uses a throttle position sensor to control the throttle opening angle based on the engine's required power, thereby regulating the amount of air intake.