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FAQ Acronym Page

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Is there a acronym page somewhere? Can we start one?

 

In all my reading I'm continually baffled and don't want to ask what something means. Maybe when I have a question I'll just post it on this same thread.

 

Please add along if you've got others I'm sure there are.

 

AFM = Air Flow Meter

CDI = Capacitive Discharge Ignition

COP = coil on plug

CTS = Coolant Temprature Sensor

EBC = Electronic Boost Control

EDI(S) = Electronic Distributorless Ignition, add an "S" and it stands for System

EGR = Exhaust Gas Recirculation

FI = Fuel injection

HO2S = Heated Oxygen Sensor

HP = Horse Power

IAC = Idle Air Control

IAT = Intake Temp Sensor

IC = Intercooler

MAF = Mass Air Flow (meter/sensor)

MAP = Manifold Absolute Pressure

More Rust than Mull = Huge Amount of Rust

MS = Mega Squirt

MSnS-E = MegasSquirt n Spark-Extra

NA = Normally Aspirated

O2S = Oxygen Sensor

OHC = Over Head Cam

PCV = Positive Crankcase Ventilation

SBC = Small Block Chevy

SBF = Small Block Ford

TB = Throttle Body

TPS =Throttle Postion sensor

LCA = lower control arm

UCA = upper control arm

TC rod = tension compression rod or strut rod

SFC = subframe connector

 

L28E=Naturally Aspirated 2.8 Liter 6 Cylinder L series Found in 280Z

L28ET=TurboCharged 2.8 Liter 6 Cylinder L series Found in 280ZX

L28et=FI (forced induction in this case, not fuel injected-that one can get confusing really quickly-the t on that motor is for turbo)

 

E=EFI Motor Used on the end of Motor type (Eg l28E)

L26E=Naturally Aspirated 2.6 Liter 6 Cylinder L series Found in 260Z

L26=Naturally Aspirated 2.6 Liter 6 Cylinder L series Found in 260Z

L24=Naturally Aspirated 2.4 Liter 6 Cylinder L series Found in 240Z

VG30et=Z31 (chassis code for early 300zx) single cam turbo engine among others in the non-us market

 

VG30dett=Z32 (chassis code for late 300zx) twin cam/twin turbo and possibly other models in non-us market

 

Rb20/5/6det/tt= these engines came from various skyline models as well as some others, generally nissan nomenclature works like this: the number is the liters (i.e. L28=2.8 liters) the e is overhead cam, de is dual overhead cam, and the number of t's indicates the number of turbos, but not always, as in the case of the Fj20e which is a twin cam that doesn't have the d in it.

 

2jzgte=supra twin turbo engine from the mark IV supra and possibly some others in the non-us market

 

1jzgte=single turbo variant of 2jzgte available in some non-us toyota models

7mgte=mark III supra single turbo engine

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IC = Intercooler

vg30et = ?

L28e = ?

L28et = ?

AEI = ?

EDI = ?

EDIS = ?

VG30DETT = ? Engines from what type of car/model

RB26DETT = ? Engines from what type of car/model

2JZGTTE = ? Engines from what type of car/model

 

L28 i know is the 2.8 Liter, what is the diff between e and the t?

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L28E=Naturally Aspirated 2.8 Liter 6 Cylinder L series Found in 280Z

L28ET=TurboCharged 2.8 Liter 6 Cylinder L series Found in 280ZX

E=EFI Motor Used on the end of Motor type Eg l28E

L26E=Naturally Aspirated 2.6 Liter 6 Cylinder L series Found in 260Z

L26=Naturally Aspirated 2.6 Liter 6 Cylinder L series Found in 260Z

L24=Naturally Aspirated 2.4 Liter 6 Cylinder L series Found in 240Z

More Rust than Mull= Huge Amount of Rust

SBC=Small Block Chevy

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IC = Intercooler

vg30et = ?

L28e = ?

L28et = ?

AEI = ?

EDI = ?

EDIS = ?

VG30DETT = ? Engines from what type of car/model

RB26DETT = ? Engines from what type of car/model

2JZGTTE = ? Engines from what type of car/model

 

L28 i know is the 2.8 Liter' date=' what is the diff between e and the t?[/quote']

 

L28e=NA (normally aspirated) L28et=FI (forced induction in this case, not fuel injected-that one can get confusing really quickly-the t on that motor is for turbo)

EDI=Electronic Distributorless Ignition, add an "S" and it stands for System

CDI=Capacitive Discharge Ignition

 

VG30et=Z31 (chassis code for early 300zx) single cam turbo engine among others in the non-us market

VG30dett=Z32 (chassis code for late 300zx) twin cam/twin turbo and possibly other models in non-us market

Rb20/5/6det/tt= these engines came from various skyline models as well as some others, generally nissan nomenclature works like this: the number is the liters (i.e. L28=2.8 liters) the e is overhead cam, de is dual overhead cam, and the number of t's indicates the number of turbos, but not always, as in the case of the Fj20e which is a twin cam that doesn't have the d in it.

2jzgte=supra twin turbo engine from the mark IV supra and possibly some others in the non-us market

1jzgte=single turbo variant of 2jzgte available in some non-us toyota models

7mgte=mark III supra single turbo engine

 

You got me with "AEI", I've never seen that one before...

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Nice find. I'll post it all here just incase that web site goes away.

OBD2/SAE ACRONYMS

 

ABS antilock brake system

 

A/C air conditioning

 

AC air cleaner

 

AIR secondary air injection

 

A/T automatic transmission or transaxle

 

SAP accelerator pedal

 

B+ battery positive voltage

 

BARO barometric pressure

 

CAC charge air cooler

 

CFI continuous fuel injection

 

CL closed loop

 

CKP crankshaft position sensor

 

CKP REF crankshaft reference

 

CMP camshaft position sensor

 

CMP REF camshaft reference

 

CO carbon monoxide

 

CO2 carbon dioxide

 

CPP clutch pedal position

 

CTOX continuous trap oxidizer

 

CTP closed throttle position

 

DEPS digital engine position sensor

 

DFCO decel fuel cut-off mode

 

DFI direct fuel injection

 

DLC data link connector

 

DTC diagnostic trouble code

 

DTM diagnostic test mode

 

EBCM electronic brake control module

 

EBTCM electronic brake traction control module

 

EC engine control

 

ECM engine control module

 

ECL engine coolant level

 

ECT engine coolant temperature

 

EEPROM elecrically erasable programmable read only memory

 

 

EFE early fuel evaporation

 

EGR exhaust gas recirculation

 

EGRT EGR temperature

 

EI electronic ignition

 

EM engine modification

 

EPROM erasable programmable read only memory

 

EVAP evaporative emission system

 

FC fan control

 

FEEPROM flash electrically erasable programmable read only memory

 

FF flexible fuel

 

FP fuel pump

 

FPROM flash erasable programmable read only memory

 

FT fuel trim

 

FTP federal test procedure

 

GCM governor control module

 

GEN generator

 

GND ground

 

H20 water

 

HO2S heated oxygen sensor

 

HO2S1 upstream heated oxygen sensor

 

HO2S2 up or downstream heated oxygen sensor

 

HO2S3 downstream heated oxygen sensor

 

HC hydocarbon

 

HVS high voltage switch

 

HVAC heating ventilation and air conditioning system

 

IA intake air

 

IAC idle air control

 

IAT intake air temperature

 

IC ignition control circuit

 

ICM ignition control module

 

IFI indirect fuel injection

 

IFS inertia fuel shutoff

 

I/M inspection/maintenance

 

IPC instrument panel cluster

 

ISC idle speed control

 

KOEC key on, engine cranking

 

KOEO key on, engine off

 

KOER key on, engine running

 

KS knock sensor

 

KSM knock sensor module

 

LTFT long term fuel trim

 

MAF mass airflow sensor

 

MAP manifold absolute pressure sensor

 

MC mixture control

 

MDP manifold differential pressure

 

MFI multiport fuel injection

 

MIL malfunction indicator lamp

 

MPH miles per hour

 

MST manifold surface temperature

 

MVZ manifold vacuum zone

 

NVRAM nonvolatile randon access memory

 

NOX oxides of nitrogen

 

O2S oxygen sensor

 

OBD onboard diagnostics

 

OBD I onboard diagnostics generation one

 

OBD II onboard diagnostics, second generation

 

OC oxidation catalyst

 

ODM output device monitor

 

OL open loop

 

OSC oxygen sensor storage

 

PAIR pulsed secondary air injection

 

PCM powertrain control module

 

PCV positive crankcase ventilation

 

PNP park/neutral switch

 

PROM program read only memory

 

PSA pressure switch assembly

 

PSP power steering pressure

 

PTOX periodic trap oxidizer

 

RAM random access memory

 

RM relay module

 

ROM read only memory

 

RPM revolutions per minute

 

SC supecharger

 

SCB supercharger bypass

 

SDM sensing diagnostic mode

 

SFI sequential fuel injection

 

SRI service reminder indicator

 

SRT system readiness test

 

STFT short term fuel trim

 

TB throttle body

 

TBI throtle body injection

 

TC turbocharger

 

TCC torque converter clutch

 

TCM transmission or transaxle control module

 

TFP throttle fluid pressure

 

TP throttle position

 

TPS throttle position sensor

 

TVV thermal vacuum valve

 

TWC three way caalyst

 

TWC+OC three way + oxidation catalytic converter

 

VAF volume airflow

 

VCM vehicle control module

 

VR voltage regulator

 

VS vehicle sensor

 

VSS vehicle speed sensor

 

WU-TWC warm up three way catalytic converter

 

WOT wide open throttle

 

 

 

EMISSIONS RELATED (OLDER OEM TERMINOLOGY)

 

 

 

AAV anti-afterburn valve (Mazda)

 

AIR Air Injection Reaction (GM)

 

AIS Air Injection System (Chrysler)

 

CC catalytic converter

 

CCP controlled canister purge (GM)

 

CCV canister control valve

 

CEC Crankcase Emission Control System (Honda)

 

CFC Chlorofluorocarbons

 

CP canister purge (GM)

 

ECS Evaporation Control System (Chrysler)

 

EEC Evaporative Emission Controls (Ford)

 

EECS Evaporative Emissions Control system (GM)

 

EFE Early Fuel Evaporation system (GM)

 

EGR-SV EGR solenoid valve (Mazda)

 

EGRTV EGR thermo valve (Chrysler)

 

EVRV electronic vacuum regulator valve for EGR (GM)

 

HAIS Heated Air Intake System (Chrysler)

 

OC oxidation converter (GM)

 

ORC oxidation reduction catalyst (GM)

 

PAFS Pulse Air Feeder System (Chrysler)

 

PAIR Pulsed Secondary Air Injection system (GM)

 

PVS ported vacuum switch

 

TAC thermostatic air cleaner (GM)

 

TAD Thermactor air diverter valve (Ford)

 

TVS thermal vacuum switch

 

TVV thermal vacuum valve (GM)

 

 

 

COMPUTERIZED ENGINE CONTROL SYSTEMS (OLDER OEM TERMINOLOGY)

 

 

C3 Computer Command Control system (GM)

 

C4 Computer Controlled Catalytic Converter system (GM)

 

CAS Clean Air System (Chrysler)

 

CCC Computer Command Control system (GM)

 

CVCC Compound Vortex Controlled Combustion system (Honda)

 

ECCS Electronic Concentrated Control System (Nissan)

 

EEC Electronic Engine Control (Ford)

 

ELB Electronic Lean Burn (Chrysler)

 

MCU Microprocessor Controlled Unit (Ford)

 

MISAR Microprocessed Sensing and Automatic Regulation (GM)

 

PGM-FI Programmed Gas Management Fuel Injection (Honda)

 

SCC Spark Control Computer (Chrysler)

 

TCCS Toyota Computer Controlled System

 

 

 

SENSORS (OLDER OEM TERMINOLOGY)

 

 

ACTS air charge temperature sensor (Ford)

 

AFS air flow sensor (Mitsubishi)

 

AFM air flow meter

 

APS absolute pressure sensor (GM)

 

APS atmospheric pressure sensor (Mazda)

 

ATS air temperature sensor (Chrysler)

 

BARO barometric pressure sensor (GM)

 

BMAP barometric/manifold absolute pressure sensor (Ford)

 

BP backpressure sensor (Ford)

 

BPS barometric pressure sensor (Ford & Nissan)

 

BPT back-pressure transducer

 

CAS crank angle sensor

 

CESS cold engine sensor switch

 

CID cylinder identification sensor (Ford)

 

CMP camshaft position sensor (GM)

 

CP crankshaft position sensor (Ford)

 

CTS charge temperature switch (Chrysler)

 

CTS coolant temperature sensor (GM)

 

CTVS choke thermal vacuum switch

 

ECT engine coolant temperature (Ford & GM)

 

EGO exhaust gas oxygen sensor (Ford)

 

EGRPS EGR valve position sensor (Mazda)

 

EOS exhaust oxygen sensor

 

EPOS EGR valve position sensor (Ford)

 

EVP EGR valve position sensor (Ford)

 

FLS fluid level sensor (GM)

 

HEGO heated exhaust gas oxygen sensor

 

IAT inlet air temperature sensor (Ford)

 

IATS intake air temperature sensor (Mazda)

 

KS knock sensor

 

MAF mass airflow sensor

 

MAP manifold absolute pressure

 

MAT manifold air temperature

 

MCT manifold charge temperature (Ford)

 

OS oxygen sensor

 

PA pressure air (Honda)

 

PIP profile ignition pickup (Ford)

 

SS speed sensor (Honda)

 

TA temperature air (Honda)

 

TP throttle position sensor (Ford)

 

TPP throttle position potentiometer

 

TPS throttle position sensor

 

TPT throttle position transducer (Chrysler)

 

TVS thermal vacuum switch (GM)

 

VAF vane airflow sensor

 

VSS vehicle speed sensor

 

WOT wide open throttle switch (GM)

 

WSS wheel speed sensor

 

 

 

ELECTRONIC COMPONENTS (OLDER OEM TERMINOLOGY)

 

 

ALCL assembly line communications link (GM)

 

ALDL assembly line data link (GM)

 

ASDM airbag system diagnostic module (Chrysler)

 

BCM body control module (GM)

 

CALPAK calibration pack

 

CECU central electronic control unit (Nissan)

 

CPU central processing unit

 

DERM diagnostic energy reserve module (GM)

 

DLC data link connector (GM)

 

EACV electronic air control valve (Honda)

 

EBM electronic body module (GM)

 

EBCM electronic brake control module (GM)

 

ECA electronic control assembly

 

ECM electronic control module (GM)

 

ECU electronic control unit (Ford, Honda & Toyota)

 

EEPROM electronically erasable programmable read only memory chip

 

EPROM erasable programmable read only memory chip

 

EI electronic ignition (GM)

 

IC integrated circuit

 

ICS idle control solenoid (GM)

 

ISC idle speed control (GM)

 

LCD liquid crystal display

 

LED light emitting diode

 

MIL malfunction indicator lamp

 

PCM powertrain control module (supercedes ECM)

 

PROM program read only memory computer chip

 

SES service engine soon indicator (GM)

 

TCC torque converter clutch (GM)

 

VCC viscous converter clutch (GM)

 

 

 

ELECTRONIC IGNITIONS (OEM TERMINOLOGY)

 

 

BID Breakerless Inductive Discharge (AMC)

 

CDI Capacitor Discharge Ignition (AMC)

 

C3I Computer Controlled Coil Ignition (GM)

 

COP Coil On Plug ignition

 

CSSA Cold Start Spark Advance (Ford)

 

CSSH Cold Start Spark Hold (Ford)

 

DIS Distributorless Ignition System (Ford)

 

DIS Direct Ignition System (GM)

 

EDIS Electronic Distributorless Ignition System (Ford)

 

HEI High Energy Ignition (GM)

 

ITCS Ignition Timing Control System (Honda)

 

SDI Saab Direct Ignition

 

SSI Solid State Ignition (Ford)

 

 

 

SPARK CONTROL SYSTEMS AND DEVICES (OEM TERMINOLOGY)

 

 

CCD computer controlled dwell (Ford)

 

CCEV Coolant Controlled Engine Vacuum Switch (Chrysler)

 

CSC Coolant Spark Control (Ford)

 

CSSA Cold Start Spark Advance (Ford)

 

CTAV Cold Temperature Actuated Vacuum (Ford)

 

CTO Coolant Temperature Override Switch (AMC)

 

DRCV distributor retard control valve

 

DSSA Dual Signal Spark Advance (Ford)

 

DVDSV differential vacuum delay and separator valve

 

DVDV distributor vacuum delay valve

 

ESA Electronic Spark Advance (Chrysler)

 

ESC Electronic Spark Control (GM)

 

ESS Electronic Spark Selection (Cadillac)

 

EST Electronic Spark Timing (GM)

 

OSAC Orifice Spark Advance Control (Chrysler)

 

PVA ported vacuum advance

 

PVS ported vacuum switch

 

SAVM spark advance vacuum modulator

 

SPOUT Spark Output signal (Ford)

 

SRDV spark retard delay valve

 

TAV temperature actuated vacuum

 

TCS Transmission Controlled Spark (GM)

 

TIC thermal ignition control (Chrysler)

 

TRS Transmission Regulated Spark (Ford)

 

VDV vacuum delay valve

 

 

 

FUEL SYSTEM (OEM TERMINOLOGY)

 

 

AIS automatic idle speed motor (Chrysler)

 

ABSV air bypass solenoid valve (Mazda)

 

ASD automatic shutdown relay (Chrysler)

 

CANP canister purge solenoid valve (Ford)

 

CCEI Coolant Controlled Idle Enrichment (Chrysler)

 

CEAB cold engine air bleed

 

CER cold enrichment rod (Ford)

 

CFI Cross Fire Injection (Chevrolet)

 

CIS Continuous Injection System (Bosch)

 

CPI Central Port Injection (GM)

 

CVR control vacuum regulator (Ford)

 

DEFI Digital Electronic Fuel Injection (Cadillac)

 

DFS deceleration fuel shutoff (Ford)

 

EFC electronic fuel control

 

EFC electronic feedback carburetor (Chrysler)

 

EFCA electronic fuel control assembly (Ford)

 

EFI electronic fuel injection

 

FBC feedback carburetor system (Ford & Mitsubishi)

 

FBCA feedback carburetor actuator (Ford)

 

FCA fuel control assembly (Chrysler)

 

FCS fuel control solenoid (Ford)

 

FDC fuel deceleration valve (Ford)

 

FI fuel injection

 

IAC idle air control (GM)

 

ISC idle speed control (GM)

 

ITS idle tracking switch (Ford)

 

JAS Jet Air System (Mitsubishi)

 

MCS mixture control solenoid (GM)

 

MFI multiport fuel injection

 

MPFI multi point fuel injection

 

MPI multi port injection

 

PECV power enrichment control valve

 

PFI port fuel injection (GM)

 

SFI Sequential Fuel Injection (GM)

 

SMPI Sequential Multiport Fuel Injection (Chrysler)

 

TABPV throttle air bypass valve (Ford)

 

TBI throttle body injection

 

TIV Thermactor idle vacuum valve (Ford)

 

TPI Tuned Port Injection (Chevrolet)

 

TKS throttle kicker solenoid (Ford)

 

TSP throttle solenoid positioner (Ford)

 

TV throttle valve

 

 

 

GENERAL

 

 

A/C air conditioning

 

AC alternating current

 

A/F air/fuel ratio

 

A/T automatic transmission

 

ATC after top center

 

ATDC after top dead center

 

ATF automatic transmission fluid

 

AWD all-wheel drive

 

BAT battery

 

BHP brake horsepower

 

BTC before top center

 

BTDC before top dead center

 

Btu British thermal units

 

C Celsius

 

CC cubic centimeters

 

cfm cubic feet per minute

 

CID cubic inch displacement

 

dB decibels

 

DC direct current

 

DOHC dual overhead cams

 

DVOM digital volt ohm meter

 

EMI electromagnetic interference

 

F Fahrenheit

 

ft.lb. foot pound

 

FWD front-wheel drive

 

gal gallon

 

GND ground

 

GPM grams per mile

 

Hg mercury

 

hp horsepower

 

IGN ignition

 

ID inside diameter

 

I/P instrument panel

 

kHz kilohertz

 

kPa kilopascals

 

Km kilometers

 

KV kilovolts

 

L liters

 

lb. ft. pound feet

 

mm millimeters

 

ms millisecond

 

mV millivolts

 

MPG miles per gallon

 

MPH miles per hour

 

Nm Newton meters

 

OD outside diameter

 

OE original equipment

 

OEM original equipment manufacture

 

OHC overhead cam

 

P/B power brakes

 

P/N part number

 

PPM parts per million

 

PS power steering

 

PSI pounds per square inch

 

pt. pint

 

Qt. quart

 

RFI radio frequency interference

 

RPM revolutions per minute

 

RPO regular production option

 

RWD rear-wheel drive

 

SOHC single overhead cam

 

TACH tachometer

 

TDC top dead center

 

V volts

 

VAC volts alternating current

 

VDC volts direct current

 

VIN vehicle identification number

 

WOT wide open throttle

 

 

 

MISCELLANEOUS

 

 

ABS antilock brake system

 

AERA Automotive Engine Rebuilders Assn.

 

API American Petroleum Institute

 

ASE Automotive Service Excellence

 

ATMC Automotive Training Managers Council

 

CAAT Council of Advanced Automotive Trainers

 

CAFE corporate average fuel economy

 

CARB California Air Resources Board

 

CCOT clutch cycling orifice tube

 

DOT Department of Transportation

 

DRBII Diagnostic Readout Box (Chrysler)

 

EPA Environmental Protection Agency

 

FMVSS Federal Motor Vehicle Safety Standards

 

FUBAR F--ked Up Beyond All Repair

 

IIIBDFI If it isn't broke don't fix it

 

IM240 inspection/maintenance 240 program

 

ISO International Standards Organization

 

KISS Keep It Simple Stupid!

 

MACS Mobile Air Conditioning Society

 

MAMA Midwest Automotive Media Assn.

 

MAP Motorist Assurance Program

 

MSDS material safety data sheet

 

NACAT National Assn. of College Automotive Teachers

 

NATEF National Automotive Technician's Education Foundation

 

NHTSA National Highway Traffic Safety Administration

 

OBD onboard diagnostics

 

PERA Production Engine Rebuilders Assn.

 

QS9000 Quality assurance standard for OEM part suppliers

 

RABS Rear wheel Antilock Brake System (Ford)

 

RWAL Rear Wheel Antilock brake system (GM)

 

SAE Society of Automotive Engineers

 

STS Service Technicians Society

 

SIR Supplemental Inflatable Restraint (air bag)

 

SRS Supplemental Restraint System (air bag)

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