What are the Symptoms and Hazards of a Dirty Throttle Body?

1 Answers
DaniellaFitz
07/29/25 6:05pm
Throttle body dirt affecting fuel response can impact engine air intake. Below are the symptoms and hazards of a dirty throttle body: Symptoms of a Dirty Throttle Body: When accelerating, you may feel the throttle is sticky or heavy, the car accelerates slowly, and the RPM rises sluggishly when pressing the throttle at idle. The response is delayed, and when you release the throttle while driving, the car speed drops immediately. A dirty throttle body affects the precision and smoothness of engine air intake. The most noticeable issue is causing idle vibrations or even stalling, as well as uneven acceleration when pressing the throttle. Hazards of a Dirty Throttle Body: Not cleaning the throttle body for a long time can cause errors in the throttle opening angle and allow air with impurities to enter the engine combustion chamber. Both of these can lead to abnormal engine operation, primarily manifested as unstable idling, sudden deceleration when driving, reduced power, and in severe cases, difficulty starting the engine and increased fuel consumption.
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