3M Aerosol Throttle Plate and Intake Cleaner

Carbon and varnish buildup on throttle plates and intake passages causes rough idle, hesitation, and poor throttle response — problems that often get misdiagnosed as something more expensive. 3M's Throttle Plate and Intake Cleaner is a fast-acting aerosol that dissolves that residue and gets things moving smoothly again.

What sets this 8.5-ounce can apart from generic carb cleaners is that it is safe for coated throttle plates, which matters on newer vehicles with electronically controlled throttle bodies that use a special coating. After cleaning, it leaves behind a light lubricating film on the assemblies. The can sprays at any angle, including upside down, and features an ergonomic trigger for precise application — helpful when you are working in tight engine bays and need to hit a specific spot.

A quick cleanup of the throttle body every 30,000 miles or so can make a noticeable difference in idle quality and throttle response, especially on higher-mileage vehicles.