What is a throttle body?

I took my vehicle in for routine maintenance, and the mechanic said they had to clean the throttle body. What even is a throttle body? What does it do?

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Answer provided by
Megan Lebron
Answered on Aug 03, 2022
Your vehicle’s throttle body sits between your air intake and engine manifold and controls how much airflow is allowed into your engine. Over time, especially if you don’t replace your air filter frequently, dirt and gunk can clog up your throttle body and cause airflow issues in your engine.
Here are the common signs of a bad or failing throttle body:
  • Acceleration issues
  • Lower vehicle performance
  • High or low idling
  • Poor gas mileage
  • Electrical issues
  • Check Engine Light comes on
While cleaning the throttle body will usually solve most of these issues, sometimes a severely damaged one will have to be replaced. Following a regular maintenance schedule that includes changing your air filter will keep your engine’s airflow system running smoothly and free of dirt and debris.
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