How to clean the throttle yourself

There are two kinds of common throttles, one is electronic throttles, and the other is mechanical throttles with cables. ?

There is no idle motor in the electronic throttle. In the idle state, the computer controls the flap in the throttle to turn a small angle to let the air flow through and provide the air intake needed for idle speed.

The electronic throttle provides the air intake needed for idling by turning the damper through a gap formed by a small angle.

After the electronic throttle is used for a period of time, dirt will be attached to the joint between the flap and the inner wall of the throttle. Originally, when idling, the air intake passage is very small, which will reduce the air intake after being blocked by dirty things. At this time, the driving computer will automatically adjust and increase the air intake by controlling the flap to increase the rotation angle. But this does not solve the fundamental problem. At this time, it is necessary to clean the throttle.

After cleaning, the air inlet channel is clear. Some people think it needs to be matched. In fact, most models do not need to be matched. Just drive straight. The computer will adjust itself after driving for a period of time.

During normal driving, when you step on the accelerator pedal, the valve will rotate at a corresponding angle according to the pedal signal. At this time, even if the throttle is dirty, that little dirty will not affect the normal intake. Therefore, some people think that the vehicle power is better after cleaning the throttle, which is completely psychological. Because dirt will only affect the idle state. Unless the throttle is so dirty that half the section is blocked. But it is impossible in reality.

Ordinary cable throttle valve:

Compared with electronic throttle, cable throttle has an idle motor and a bypass chamber. When idling, air enters the engine through the bypass ventilation room to provide the air intake needed for idling.

The idle motor controls the air intake by controlling the movement of the valve core, so as to realize the accurate control of idle speed by the computer.

The following is the path of air at idle speed. It can be seen that air enters the engine through the bypass plenum. Therefore, even if there is dirt at the joint between the flap and the inner wall, it will not affect the idle speed. So if your car is pulling the throttle and you see that the inner wall of the throttle is dirty, don't worry, there is no difference at all. Because the air doesn't pass through here when idling. During normal driving, the opening angle of the flap is very large, which will not have much influence on air intake.

However, this does not mean that the cable throttle valve does not need cleaning. In some cases, some dust may accumulate in the bypass ventilation room, thus affecting the idle speed control of the idle motor. It also needs cleaning at this time. But the bypass ventilation room is clean.

Some people say: my car is a cable accelerator, and it can idle after cleaning. Probably cleaned the bypass ventilation room when cleaning.

Summary:

1. Vehicles equipped with electronic throttle need to clean the throttle regularly.

2. For vehicles with cable throttle, it is necessary to focus on cleaning the bypass airway.

Reasonable car use

Too dirty throttle will bring many problems, such as unstable idle speed, high and low rotation speed, sudden setback when the vehicle accelerates or collects oil, flameout and so on. If there is too much sludge in the accelerator, it may lead to poor engine acceleration and increased fuel consumption, which is a big worry for the owner. What if the throttle is dirty? Clean it up, go to a 4S shop or a professional repair shop, and it will be repaired soon. Finally, initialization is needed, usually called reset.

How to remove the throttle?

When disassembling and installing the throttle valve, skilled and safe operation can completely avoid the damage of the throttle valve body. Removing the throttle body requires moving several parts:

1, engine upper cover plate,

2. Intake air filter end and spring clip

3. Inlet throttle end and spring clip,

4. Crankcase ventilation pipe solenoid valve plug

5. Bypass pipe of crankcase ventilation pipe

7. Throttle harness plug

8. Throttle water circulation pipe

9. Throttle steel rope

10, throttle fixing screw

These parts are operated with proper tools and strength, and the probability of damage is very small. The damage of throttle body itself is mostly internal circuit and idle motor.

When cleaning the throttle, first remove the intake throat to expose the throttle, remove the negative electrode of the battery, turn off the ignition switch, straighten the throttle plate, spray a small amount of detergent into the throttle, and then scrub it carefully with a polyester rag. Deep in the throttle, you can clamp the rag and scrub it carefully where you can't reach it.

After the throttle is cleaned, install it according to the procedure just removed.

How to initialize the throttle?

After cleaning the throttle and installing the reset, initialization can be started. The reason for initialization is that the computer has a memory function when adjusting the throttle opening. Because of the blockage of sludge, in order to ensure air intake, the computer will automatically adjust the throttle opening to make the air intake in a normal state.

In fact, initialization is also very simple, just use a special computer. You can do it by hand without a special computer, but it is not as fast as a computer, and sometimes you may fail and need to do it again.

There are three ways to divide shares in different models:?

1. Turn the key to the second gear, that is, the gear where the indicator light of the instrument is fully lit. After waiting for 20s, pedal the accelerator to the end, keep it at about 10s, release the accelerator, turn off the ignition switch, pull out the key and initialize. ?

2. Turn the key to the second gear 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, usually until 15-20s, and then ignite to see whether the refueling is normal and whether the engine fault light is turned off. If at first you don't succeed, do it a second time, until you succeed, you usually succeed once.

3. Some models must be initialized by computer. If this is the case, you should go to a store with a computer reset to clean it.