What is the reason for the Buick Excelle idling at 1000 rpm?

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The reasons for the Buick Excelle idling at 1000 rpm include carbon buildup on the intake valve and severe carbon buildup on the throttle body. Severe carbon buildup on the intake valve: When there is severe carbon buildup on the engine's intake valve, it can lead to a series of problems such as reduced engine power, increased fuel consumption, and increased exhaust emissions. The solution is to use fuel additives and an intravenous drip to clean only the carbon deposits on the surface of the intake valve and intake pipe. Severe carbon buildup on the throttle body: This can result in reduced engine power. The solution is to go to a repair shop to clean the carbon deposits on the throttle body. During cleaning, components such as the throttle body must be removed and cleaned thoroughly using tools like screwdrivers, detergents, and toothbrushes.