What is the reason why the fault light comes on after the throttle valve is cleaned?

Whether this fault light is on or not depends on how much cleaning agent is sprayed into the intake pipe. General carburetor cleaning agents are flammable. If you spray too much, the driving computer will think that the mixture concentration is too high, and will automatically open the throttle to let more air in for dilution, so the idle speed will increase. In general, the increase of the concentration of mixed gas can be solved by this method, but the carburetor cleaning agent is liquid and is not easy to evaporate. If you spray less, it will be ok, but if you spray more, it will not work. At this time, the fault light will be on. Moreover, there may be a problem that the first ignition cannot be started. When the mixture concentration is high, the driving computer will automatically reduce the fuel injection quantity, so it is necessary to step on the accelerator more.

If you don't spray a lot of cleaning agent during cleaning, this lamp won't light up.

Avoid:

1, spray to the air inlet as little as possible. You can spray the cleaning agent on the cloth and then wipe the air inlet flap instead of spraying it directly.

If you spray too much, you can dip out these detergents with a cloth. However, the air inlet of kpq is very deep, and it needs to be wrapped with a long stick to get it, but in fact ... whether this fault light is on or not depends on how much cleaning agent is sprayed in the air inlet pipe. General carburetor cleaning agents are flammable. If you spray too much, the driving computer will think that the mixture concentration is too high, and will automatically open the throttle to let more air in for dilution, so the idle speed will increase. In general, the increase in the concentration of mixed gas can be solved in this way, but the carburetor cleaning agent is liquid and is not easy to evaporate. If you spray less, you can use it to catch muscle light, but if you spray more, it will not work. At this time, the fault light will be on. Moreover, there may be a problem that the first ignition cannot be started. When the mixture concentration is high, the driving computer will automatically reduce the fuel injection quantity, so it is necessary to step on the accelerator more.

If you don't spray a lot of cleaning agent during cleaning, this lamp won't light up.

Avoid:

1, spray to the air inlet as little as possible. You can spray the cleaning agent on the cloth and then wipe the air inlet flap instead of spraying it directly.

2, spray too much, you can use cloth to dip out these cleaning agents, but the air inlet of kpq is very deep, you need to wrap a piece of cloth with a long stick to get it, but the actual effect is not very good, the inside is very rough and it is not easy to clean.

3, open to dry, naturally evaporate, I have never tried this, it is estimated that the temperature will be high for a long time.

If the problem is not serious, some cars of this fault light will go out by themselves, which is why 4s has always recommended running first. However, due to the light on caused by the throttle, the light will not go out by itself, and some faults can go out by themselves.

Solution after the light is on:

1, go to 4s and let them out. If 4s people can't talk well, don't say they cleared the throttle, say there is a problem. At this time, 4s technicians will come to check, but of course, the root of the problem cannot be found. Will turn off the lights and let you run. If it turns on again, find them. This is the standard scheme for 4s to deal with difficult problems. No change, no charge.

2. When you go to a small shop where you can repair GM, you usually have a device connected to the driving computer, which allows them to turn off the lights.

3, handle it yourself, buy a connector with obdii interface and connect it to a mobile phone or computer for processing.

4. I just bought an obdii driving computer from the Internet recently, which can display fuel consumption and the like, and also has the functions of reading fault codes and clearing fault codes.

Sometimes unplugging the battery cable first will reset the computer and reduce the possibility of lighting, but it doesn't seem very common, and it is estimated to be related to the state of the car.