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Federation Internationale De L'Automobile (FIA)

An international association of national automobile clubs that sanction and regulate major international auto racing series, such as Formula One.

Federation Internationale Du Sport Automobile (FISA)

A division of FIA that sanctions and regulates major international auto racing series.

Federation Of Automotive Qualified Technicians (FAQT)

A professional association that provides life, health, and disability insurance.

Feed

The power supply of hot wire.

Feed Holes

The holes to supply coolant or oil to an engine.

Feedback

1. A principle of fuel-system design wherein a signal from an oxygen sensor in the exhaust system is used to give a computer the input it needs to properly regulate the carburetor or fuel-injection system in order to maintain a nearly perfect air/fuel ratio. 2 A signal to a computer that reports on the position of a component, as an EGR valve. 3. The return of a portion of the output (actuator) to the input (computer), used to maintain an output device within predetermined limits [4] the reverse flow of electrical current through a circuit or electrical unit that should not normally be operating, this feedback current (reverse-bias current flow) is most often caused by a poor ground connection for the sane normally operating circuit.

Feedback Carburetor

A carburetor that controls the air/fuel mixture according to commands from the engine control computer, typically through the operation of a duty solenoid.

Feeler Gauge

A blade, usually metal of precise predetermined thickness, used to measure the clearance between two parts.

Felt

Natural felts are produced by compressed wool, hair, wool/hair, or synthetic fibers, yielding a wide range of densities and permeabilities of consistent density, pore size, and mesh geometry so that performance is reasonably predictable.

Felt Dust Seal

1. An engine seal made of felt, usually used on the front crankshaft pulley. 2. A compressor-shaft seal made of felt, usually found between the seal face and armature of the clutch.

FEM

Acronym for Front Electronic Module (Ford).

Female

The universal designation of a part into which a mating (male) part fits.

Femto

The prefix representing the number 0.000,000,000,000,001.

Fender

Usually, the side portion of a vehicle in front of the doors is referred to as a fender, while the portion behind the doors is called a quarter panel. Minor automotive accidents often are called fender benders, since an impact to a vehicle's bumper often will bend the sheetmetal at the edge of a fender.

Fender Cover

A protective cover placed on the fender when a mechanic works on an engine, preventing damage to the finish.

Fender Flare

A raised section that attaches to the side of a vehicle over a wheelwell, extending the body. Fender flares are often applied to off-road trucks. They can provide additional legal coverage if you install wider tires, and also can make a vehicle look more muscular. They typically are made of plastic, urethane or fiberglass.

Fender Skirt

A removable piece of sheetmetal or fiberglass that fills in the arch in a wheelwell. (It has to be removable, so the wheel could be removed.) Fender skirts were an option or a standard feature on some vintage vehicles and are sometimes fitted to customs.

Fenderside

A narrow-bed pickup truck.

Ferguson Formula (FF)

A four-wheel drive system developed in the 1960s, a forerunner of the AWD and 4WD systems in high-performance cars today.

Ferrite

An iron compound that has not been combined with carbon in pig iron or steel.