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Fad Car

A T-bucket with a bobbed pickup bed.

Fad T

A term used for fad car.

Fade

A term often used when referring to brake fade.

Fadeaway Fenders

A front-fender design that flowed back and blended into the front doors of the vehicle; a popular style of the 1940s.

Fahrenheit (F)

The English scale for the measure of temperature.

Fail Record

These records store information about operating conditions when a DTC is stored. The PCM has the ability to store multiple Fail Records, and it also has the ability to update Fail Records.

Fail Safe

A computer back-up designed to enable minimal system operation in the event of a sensor or other failure.

Failure

The total cessation of function of a system or device, such as coil failure.

Failure Code

A term used for trouble code.

Failure Records

Failure records data is a GM enhancement of the OBDII freeze frame feature.

Fall Time

The switching time required for the signal voltage to decrease from logic high to logic low.

Falling Edge

The part of a waveform showing the voltage decreasing.

False Air

Air in a fuel-injection system in excess of that required for combustion.

False Guide

A valve guide used to replace a worn integral-valve guide.

Falt Codes

A set of numbers representing the result of an on-board diagnostic test.

FAM

Feedback actuator motor.

Family Buggy

1. The family car. 2. A vehicle more than ten years old.

Fan

1. A device having two or more blades attached to the shaft of a motor. 2. A device mounted in the heater/air-conditioner duct that causes air to pas over the heater core and evaporator. 3. A device having four or more blades, mounted on the water pump, that causes air to pass through the radiator and condenser. 4. The spray pattern of a paint spray gun. 5. The incorrect technique of applying paint by waving a spray gun back and forth with the wrist.

Fan

A multi-blade device that spins rapidly to cool an engine. Most factory fans are mounted between the radiator and the engine, and they pull air through the radiator. In some cases, it is useful to add an additional fan in front of the radiator to push even more cool air toward the engine. A high-performance fan may operate more efficiently than the stock unit it is designed to replace, moving more air or requiring less horsepower to operate.

Fan Belt

A flexible V-,or flat poly-grove-type drive belt that transfers power from the crankshaft pulley to the water pump and/or accessories, such as the alternator.