What happens when the accelerator of the car breaks down? thank you

1, the engine idle speed is unstable, the high idle speed drops discontinuously, and it is difficult to start the engine, especially the cold start;

2, the engine idle speed instability or no idle speed;

3. The engine is difficult to start;

4. Insufficient engine power, poor acceleration performance and unstable operation;

5. The exhaust pipe of the car emits black smoke, which increases fuel consumption.

Extended data:

Problems needing attention in cleaning automobile throttle

1. 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 and cleaned. Nozzle borrowing disassembly cleaning and disassembly-free cleaning have their own advantages and disadvantages. Generally speaking, the maintenance station suggests no disassembly and cleaning to prevent other unnecessary waste.

For example, it is necessary to replace the sealing ring or install some other gaskets after disassembly, or there will be oil leakage and air leakage during disassembly, which will delay the owner's time.

2. After cleaning, initialize the throttle 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 keep 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.

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