Glossary “fatigue” Definition:
Tendency of a material to break under conditions of repeated stressing considerably below its tensile strength.
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fatigue failure
Glossary “fatigue failure” Definition:
Metal failure due to repeated stress so that the character of the metal is altered and it cracks. This is a condition that frequently causes engine bearing failure due to excessive engine idling or slow engine-idling speed.
fatigue strength
Glossary “fatigue strength” Definition:
Measurement of a material’s resistance to fatigue. Ability of a bearing to withstand the loads placed on it.
fast flush
Glossary “fast flush” Definition:
Special machine to clean the cooling system by circulating a cleaning solution.
fast idle
Glossary “fast idle” Definition:
Higher speed, 1,100 to 1,500 rpm, at which an engine idles during cold start and warm-up, when first started.
fast idle cam
Glossary “fast idle cam” Definition:
A cam-shaped lever on the carburetor or throttle body that provides fast-idle action when the engine is cold.
fast burn
Glossary “fast burn” Definition:
Using high compression and swirl, the rapid combustion of an A/F mixture.
fanning
Glossary “fanning” Definition:
Use of pressurized air through a spray gun to facilitate drying, a practice not recommended.
FANSS
Glossary “FANSS” Definition:
Fan Speed Sensor Signal Displays as RPM.
FANSSM
Glossary “FANSSM” Definition:
Variable Speed Fan Hall Sensor Input
FANVARF
Glossary “FANVARF” Definition:
Variable Speed Fan Output Fault Displays Yes/No.
farad (F)
Glossary “farad (F)” Definition:
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 Michael Faraday (1791-1867)
Faraday
Glossary “Faraday” Definition:
Michael Faraday (1791-1867) is credited with the discovery of electromagnetic induction.
fan clutch
Glossary “fan clutch” Definition:
Device installed between the water-pump pulley and fan of an engine-driven fan that is reacts in response to engine speed and underhood temperature.
fan hub
Glossary “fan hub” Definition:
Mounting surface for the fan.
fan shroud
Glossary “fan shroud” Definition:
Plastic or metal housing inside which the fan rotates; on certain vehicles, allowing all of the air flow to past through the radiator finned tubing and prevents air recirculation.
FANDC
Glossary “FANDC” Definition:
Variable Speed Fan Duty Cycle
false guide
Glossary “false guide” Definition:
Valve guide used to replace a worn integral-valve guide.
FAM
Glossary “FAM” Definition:
Feedback Actuator Motor
fan
Glossary “fan” Definition:
1). Device having two or more blades attached to the shaft of a motor. 2). Device mounted in the heater/air-conditioner duct that causes air to pass over the heater core and evaporator. 3). Device having four or more blades, mounted on the water pump, that causes air to pass through the radiator and condenser. 4). 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.