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Fan Belt

The Fan Belt connects from the crankshaft to the engine’s cooling fan, supplying power to the fan, with the exception of vehicles equipped with electric fans. Like any belt under the hood, the fan belt can crack or break over time. As the fan belt starts to weaken, it provides less power to the cooling fan, which could lead to the engine running too hot or the car stalling out altogether.

Flooding the Engine

The term “Flooding the Engine” refers to letting too much fuel into the carburetor through the choke. Although this rarely happens with newer cars that use fuel injection to control the mixture of air and fuel that starts the engine, older cars that have a carburetor are susceptible to this problem, especially on cold mornings, unless the choke is properly calibrated.


The flywheel is the part of the clutch that connects to the engine and helps lock the engine to the transmission input shaft so they spin at the same speed. No clutch will last forever, and the flywheel is susceptible from wear and warping due to heat caused from friction. When the engine is under pressure from driving up a hill, towing something, or accelerating to pass, the clutch is more at risk of slipping. So, it gets hotter. And the hotter it gets, the more stress this puts on the flywheel.

Four-Wheel Drive

A Four-Wheel Drive vehicle has a drivetrain that allows all four wheels to receive torque from the engine simultaneously. Powering all four wheels at once provides better control than normal cars, especially on difficult driving surfaces such as snow, ice, mud or rocks.

Fog Lights

Fog Lights are lights that are mounted low on the front end of your car below the bumper and emanate light straight out rather than radially. Because fog tends to hover a foot or so off the ground, fog lights work to illuminate the road beneath the fog layer so you can see better ahead.


Freon is a brand name of refridgerants used in car (and home) air conditioning units. Originally developed in the 1920s as a chlorofluorocarbon (CFC), studies have found chlorofluorocarbons to be responsible for ozone depletion. Refrigerants today are now comprised of fluorine instead of chlorine, which do not deplete ozone. Still, the name Freon is used synonymously with the refrigerant you use in your car.

Front Wheel Drive

A Front-Wheel Drive vehicle has a drivetrain where the engine powers only the front wheels of the car. Most non-sports cars on the road are front-wheel drive because this arrangement allows for a lighter weight car, and lighter weight means better fuel efficiency. On wet roads, front-wheel drive vehicles also provide better traction than rear-wheel drive vehicles.

Fuel Filter

The Fuel Filter screens harmful particles from the fuel line. Each time you fill up with gas, tiny paint chips, dirt and rust from the underground fuel containers enter your gas tank. If these substances are not removed before the fuel enters your engine, they will cause rapid wear and failure of the fuel pump and injectors due to their abrasive nature.

Fuel Pumps

As the name suggests, Fuel Pumps pump fuel from the gas tank to the engine. Although some engines use gravity to feed the fuel and do not require a pump, in many cars, fuel has to be pumped from the fuel tank to the engine, and delivered under low pressure to the carburetor, or under high pressure to the fuel injectors.

Fuel Injection

After 1990, cars were built with fuel injection systems rather than carburetors because fuel injectors offer better efficiency and performance in delivering fuel to the engine. In this system, when you step on the gas pedal, the Engine Control Unit (ECU) of your car calculates what the air-to-fuel ratio should be and signals to the fuel injectors. In response, the fuel injectors send a high-pressure spray of fuel to the cylinder, which then powers the engine and makes the car move at the appropriate speed.