What Causes High Idle Speed After Cleaning the Throttle Body?

1 Answers
LeJoseph
07/29/25 4:39pm
The reasons for high idle speed after cleaning the throttle body are: 1. Throttle sticking and incomplete closure; 2. Faulty idle control valve; 3. Faulty coolant temperature sensor; 4. Air intake system leakage; 5. Malfunctioning air conditioning switch and power steering pressure switch. The method for cleaning the throttle body is: 1. Turn off the ignition switch and remove the negative battery terminal; 2. Remove the throttle cable, intake hose, and throttle body mounting screws in sequence; 3. Clean the throttle body with a cleaning agent, using a cotton swab for hard-to-reach areas. The throttle body is a controllable valve that regulates air intake into the engine. The air mixes with gasoline in the intake manifold to form a combustible mixture, which then burns to produce power.
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