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What are the effects of a dirty throttle body?

1 Answers

StNaomi

07/30/25 10:55am

A dirty throttle body can cause the car to shake when starting and also during driving. Here are some precautions for throttle body cleaning: 1. When cleaning the throttle body, it doesn't necessarily need to be disassembled, but the intake sealing parts must be thoroughly cleaned. The idle speed control valve must be removed to be cleaned properly. There are pros and cons to both disassembling and non-disassembling methods for cleaning the fuel injectors. Generally, repair shops recommend non-disassembling cleaning to avoid unnecessary waste, such as needing to replace sealing rings or other gaskets after disassembly, or encountering oil or air leaks during the disassembly process, which could waste the car owner's time. 2. After cleaning, reassemble according to the disassembly procedure, and then perform throttle body initialization. This is because the ECU has a memory function when adjusting the throttle opening. Previously, due to sludge blockage, the ECU automatically adjusted the throttle opening to ensure proper air intake. After cleaning, initialization is needed to restore normal air intake conditions.

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