The composition of the electric throttle can be roughly divided into the following parts: throttle valve, electromagnetic driver, potentiometer, controller (some not, directly by the ECU tube), bypass valve. Its fault characteristics are divided into two categories: hard fault and soft fault.
Hard fault refers to mechanical damage, soft fault refers to dirt, misalignment and so on.
1. Hard faults The resistor part of the potentiometer is a layer of carbon film sprayed on the polyester substrate, which is actually a very low-level preparation process, wear resistance is not high. To put it bluntly, it's not as good as the potentiometer of our usual appliances. Sliding contacts are made up of a row of fine steel anti-claws, note that it is anti-claw! This is just adding insult to injury!
In addition, a little protective agent on the carbon film is not coating, shedding of charcoal powder leads to poor contact, bright lights are inevitable.
2. Soft faults Everyone is often bothered by cleaning the throttle because most of the time the throttle runs low.
Air at a very high speed (dozens of ~ hundreds of M/s) flow of the festive valve gap, the gradual accumulation of dust on the air flow effect more than the throttle regulation capacity.