Video tutorial on changing throttle in garage

First, apply a little oil on the fixed metal beam ring to avoid slipping teeth during disassembly. [1] Remove the metal collar of the throttle hose. After the hose is removed, the left end is the position of the throttle. Remove the negative electrode of the battery, turn off the ignition switch, straighten the throttle plate, spray a small amount of "carburetor cleaner" into the throttle, and then carefully scrub it with polyester rag or high-spin "non-woven fabric". Deep in the throttle, you can clamp the rag and scrub it carefully where your hands can't reach it.

When cleaning the throttle valve, it is not necessary to disassemble it, but the sealing part of the inlet steam must be cleaned, and the idle motor must be disassembled for cleaning. There are advantages and disadvantages of cleaning nozzles by borrowing and disassembling. Generally speaking, the maintenance station suggests disassembling and washing, which can prevent other unnecessary waste, such as replacing the sealing ring after disassembling or installing other gaskets, or delaying the owner's time because of oil and gas leakage when disassembling.

After cleaning, the throttle will be initialized according to the disassembly procedure just now. After cleaning the throttle, it needs to be initialized, because the computer has a memory function when adjusting the throttle opening, because there was sludge blockage in the past. In order to ensure the air intake, the computer will automatically adjust the throttle opening to make the air intake in a normal state.

But there is no sludge blockage after cleaning. If the throttle valve still maintains its previous opening, it will cause excessive intake air. As a result, the engine will shake when starting, and the acceleration will be weak, and the engine fault light may light up.

Then why does the engine sometimes work normally without initialization after cleaning the throttle? That's because the throttle is not too dirty, and its intake has not changed much after cleaning. However, the change of the throttle valve after cleaning is invisible to the naked eye and needs to be initialized.

In fact, initialization is very simple. You can do it with a special computer or by hand, but it is not as fast as a computer, and sometimes it will fail. It doesn't matter if you fail. Do it again. According to different cars, there are two ways to initialize:

Initial method

The first is to turn on the second gear of the key, which is the gear indicated by the instrument to be fully lit. Then wait for 20 seconds, press the accelerator to the bottom, hold it for about 10 second, release the accelerator, turn off the ignition switch, pull out the key, and the initialization is complete.

The second is to turn on the key in the second gear and hold it for 30 seconds, then turn off the ignition switch and pull out the key. It should be noted that after the two methods are completed, it will take some time to try to ignite. Generally, you can wait 15-20 seconds, and then ignite to see if the refueling is normal and the engine fault light is off. If at first you don't succeed, you can do it again until you succeed. You can usually succeed once, at most twice.

But according to different cars, the method of restoration is different. Some cars must be initialized by a computer. In that case, the owner is advised to send the car to a shop with professional equipment for cleaning.