Throttle body cleaning
Cleaning the valve that controls how much air goes into the engine.
In plain English
The throttle body is a valve between the air filter and the engine. When you press the gas pedal, a flap inside opens to let in more air. Over time a film of carbon and oil builds up around the flap. Cleaning it means removing that buildup with a solvent.
Why it's on your estimate
Buildup can cause a rough or unsteady idle, stalling when coming to a stop, or a hesitant gas pedal. Some shops also offer it as a routine add-on service.
How urgent is it?
Can usually wait
If the car idles and drives normally, this is usually optional. It is worth doing when you actually have idle or stalling symptoms.
Questions to ask the shop
- What symptom is this meant to fix?
- Is it listed in my car's maintenance schedule?
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