Is the 07 Corolla accelerator easy to break down?

07 corolla accelerator is easy to break. There are two main reasons why the throttle valve is easy to break: hard fault and soft fault. Hard fault refers to mechanical damage, and soft fault refers to dirt, maladjustment, etc. Hard fault: The resistance part of potentiometer is formed by spraying a layer of carbon film on polyester substrate, so the wear resistance is not high, and the falling carbon powder is easy to cause poor contact. Soft fault: the throttle valve is opened too low, and the influence of dust accumulation on airflow is greater than the adjustment ability of throttle valve.