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Fan Blade

In an engine cooling-system fan, four to six wings on the fan, usually spaced unevenly to reduce vibration and noise.

Fan Clutch

A device installed between the water-pump pulley and fan of an engine-driven fan that is sensitive to engine speed and underhood temperature.

Fan Hub

The mounting surface for the fan.

Fan Shroud

Plastic or metal housing inside which the fan rotates; on certain vehicles, this allows the fan to pull more air past radiator finned tubing and prevents air recirculation.

Fanning

The use of pressurized air through a spray gun to facilitate drying, a practice not recommended.

Fanning The Brakes

A term used for brake fanning.

FAQT

An acronym for Federation of Automotive Qualified Technicians.

Farad (F)

The basic unit for capacitance. A capacitor has a value of one farad when it has stored one coulomb of charge at one volt. Named for an English physicist Michael Faraday (1791-1867).

Faraday

Michael Faraday (1791-1867) A physicist he is generally credited with the discovery of electromagnetic induction and the term Farad was named in his honor.

Fast Flush

The use of a special machine to clean the cooling system by circulating a cleaning solution.

Fast Idle

The higher speed, 1,100 to 1,500 r.p.m., at which an engine idles during warming-up, when first started.

Fast Overdrive

A planetary gear set operating with the planetary carrier as input, the sun gear as output, and the ring gear held.

Fast Reverse

A planetary gear set operating with the planetary carrier held; the ring gear is input, and the sun gear rotates in the opposite direction.

Fast-idle Cam

A cam-shaped lever on the carburetor that provides fast-idle action when the engine is cold.

Fast-idle Screw

A screw in the carburetor linkage to adjust fast-idle speed.

Fast-idle Solenoid

An electro-mechanical device on the carburetor for adjustment of the fast-idle speed.

Fastback

An auto body-style having a roof line that extends in a single, simple curve from the windshield to the rear bumper.

FAT

A acronym for File Allocation Table. A table that the operating system uses to locate files on a disk.

Fat

See rich.

Fat Fenders

Bulbous fenders, as on vehicles in the 1930s and 1940s.