What causes severe car shaking and lack of acceleration power?

[SanEli]

Severe car shaking and lack of acceleration power are primarily caused by excessive carbon buildup in the throttle body, which obstructs proper air intake. Here's some information about the throttle body's functions: Function: Its main purpose is to detect whether the engine is in idle condition or under load, and whether it's in acceleration or deceleration mode. Location: The throttle position sensor, also known as the throttle opening sensor or throttle switch, is a device used to monitor the engine's operating state. It essentially consists of a variable resistor and several switches, installed on the throttle body. Operation method: The resistor's rotating shaft is connected to the throttle. It has two contact points: a full-open contact and an idle contact. When the throttle is in the idle position, the idle contact closes, sending an idle condition signal to the computer. When the throttle is in other positions, the idle contact opens, outputting voltage signals corresponding to different throttle angles. The computer then identifies the engine's load based on the signal voltage value, and determines whether the engine is accelerating or decelerating based on the rate of voltage change over a certain period.