How to Clean a Throttle Body

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Here's how to clean the throttle body on any vehicle that has a drive-by-cable throttle system.

This was demonstrated on a 1999 Toyota Camry Solara with the 3.0L 1MZ-FE V6 engine. Same process as Lexus ES300, RX300, Toyota Sienna, Camry V6, Solara, Highlander V6 and Avalon and is similar to the Matrix, Corolla, Scion, 4Runner and Rav4.

Cleaning the throttle body and mass air flow sensor will allow the car to run smoothly especially at idle. The PCV system dumps oil back into the intake causing the throttle body, idle air control valve and mass airflow to get gummed up with carbon deposits.

This can lead to a low or non-existent idle, rough idle, lack of throttle response and poor fuel economy.

It is recommended to clean the intake system at least once per year on older vehicles.

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