Glossary “feed holes” Definition:
Passages used to supply coolant or oil to an engine.
f
feedback
Glossary “feedback” Definition:
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 A/F ratio. 2). A signal to a computer that reports on the position of a component, such 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 same normally operating circuit
feedback carburetor
Glossary “feedback carburetor” Definition:
A carburetor that controls the A/F mixture according to commands from the engine control computer, typically through the operation of a duty cycle solenoid.
feedback carburetor actuator
Glossary “feedback carburetor actuator” Definition:
Actuating device used on some carburetors that control the A/F ratio in the idle and primary metering fuel circuits.
FEEPROM
Glossary “FEEPROM” Definition:
Flash Electrically Erasable Programmable Read-Only Memory
feeler gauge
Glossary “feeler gauge” Definition:
A blade, usually metal of precise predetermined thickness, used to measure the clearance between two parts.
Federal Test Procedure (FTP)
Glossary “Federal Test Procedure (FTP)” Definition:
Test procedure developed by the EPA to cerify the emissions package of newly manufactured vehicles.
feed
Glossary “feed” Definition:
Power supply of hot wire, may also refer to a source of fluid or vapor, both pressurized and non-pressurized
Federation of Automotive Qualified Technicians (FAQT)
Glossary “Federation of Automotive Qualified Technicians (FAQT)” Definition:
A professional association that provides life, health, and disability insurance.
featheredging
Glossary “featheredging” Definition:
The tapering of the broken edges of paint during sanding so that the featheredge is hardly felt or is not felt at all.
feathering
Glossary “feathering” Definition:
1). Modulating the throttle lightly and smoothly for precise, controlled changes in engine speed. 2). Tapering to a very fine application of color at the beginning and end of a stroke by arcing and triggering. Color goes on like the cross-section of a feather. An excellent technique for spot repair.
featherweight leaf spring
Glossary “featherweight leaf spring” Definition:
Fiber composite spring.
FEC
Glossary “FEC” Definition:
Fuel Evaporation Control
FED
Glossary “FED” Definition:
Federal (49 states)
federal version
Glossary “federal version” Definition:
Vehicle that meets the US Federal exhaust emission standards, but not California’s standards.
FDV
Glossary “FDV” Definition:
Forward Delay Valve
FEAD
Glossary “FEAD” Definition:
Front End Accessory Drive
featheredge
Glossary “featheredge” Definition:
Technique of blending the repair of a damaged area into the undamaged area, maintaining the original surface texture and sheen.
FCM
Glossary “FCM” Definition:
Front Control Module
FCOS
Glossary “FCOS” Definition:
Fuel Cut-Off Solenoid