CRC Throttle Body & Air Intake Cleaner is an effective blend of liquid hydrocarbon cleaning compounds specifically formulated to remove harmful deposits from throttle bodies and air intake systems in fuel injected vehicles. It does not harm coatings on modern throttle body surfaces that are applied during the manufacturing process to allow for controlled and undisturbed airflow. Stalling and rough idling is often caused by a build-up of deposits from airborne contaminants or oil and combustion gases in the throttle body. Regular cleaning with CRC Throttle Body & Air Intake Cleaner restores engine performance, improves fuel economy, reduces engine wear and prevents build-up while lubricating moving parts. For maximum performance, use CRC Throttle Body & Air Intake Cleaner and CRC Mass Air Flow Cleaner every time the air filter is serviced.