Why should I clean my Throttle Body and does it really improve my cars performance? The gas pedal controls the throttle body and as you push on the pedal it opens and closes the throttle to allow air flow into the engine. If the air is blocked by gum or deposit build up, it causes rough idle or hesitation. The throttle body is easy to clean, just remove the air intake ducted, place a rag under the throttle body to collect run off, while manually moving the butterfly valve back open and closed. Spay CRC Throttle Body and Air Intake Cleaner on the unit with quick spray burst do not spray continuously and then be sure to clean throttle linkages to get rid of the lubricating residue. This CRC product can also be used to clean air intakes to allow the greatest amount of air flow back into the engine, and it dries fast so you can drive your car right away. To improve your over all MPG, repeat this process every 15,000 miles.