- F -
FPI
An acronym for Feet per Second or Fins per Inch.
FPM
Fuel pump monitor.
FPR
Fuel pressure regulator.
FPR-VSV
Fuel pressure regulator vacuum switching valve.
FPRA
Fuel pressure regulator assembly.
FPRC
Fuel pressure regulator control.
FR
Fill pipe restrictor; Also Fr, Francium An element with the atomic number of 87.
Fractionation
A condition when one or more refrigerants of the same blend leak at a faster rate than other refrigerant in that same blend.
Frame
The substructure of a vehicle supported by the suspension system that supports the bodywork, engine, and power train.
Frame
The metal skeletal structure to which a vehicles body, engine, drivetrain and suspension components (e.g., springs and shocks) are attached.
Frame Alignment
The measurement of a vehicle frame to ensure that it is within a manufacturer's specifications.
Franchised Dealer
A dealer that has a contract with the vehicle manufacturer to sell and service it vehicles.
Frantz Oil Filter
The trademarked name of a popular filter that uses a roll of toilet tissue as its filtration medium.
Fredal
FED
Free Electron
1. An electron that is not bound to a particular atom. 2. An electron that is in the valance shell of an atom with less than 4 electrons in that shell.
Free Play
The distance the brake pedal moves before the master cylinder primary piston moves.
Free-air Subwoofer
A subwoofer design that usually is mounted in the package shelf of a car, and uses the trunk as its enclosure. This mounting method can produce poor results if the trunk area is not well-sealed and sonically isolated from the passenger compartment.
Free-flow Exhaust
An exhaust system with reduced back pressure.
Free-standing Deck
An engine block construction in which the cylinders are cast in place without being tied by the deck to the outer walls.
Free-travel
Movement of an operating part before it comes in contact with another part.