I have put together a cheat sheet for all to you. Use this sheet when you need to understand when someone abbreviates a phase and you do not know what it stands for. Now my no means is this list complete. If you knwo of additional items let me know and I will update the list and replublish it for all.. If you would like this sent to you please email me with your request and what format you would like it in. Datsun FAQ Acronym Page DRCV distributor retard control valve A/C air conditioning A/F air/fuel ratio A/T automatic transmission or transaxle ABS antilock brake system AC air cleaner AC alternating current AERA Automotive Engine Rebuilders Assn. AFM air flow meter AIR secondary air injection API American Petroleum Institute ASE Automotive Service Excellence ATC after top center ATDC after top dead center ATF automatic transmission fluid ATMC Automotive Training Managers Council AWD all-wheel drive B+ battery positive voltage BARO barometric pressure BAT battery BHP brake horsepower BPS barometric pressure sensor (Ford & Nissan) BPT back-pressure transducer BTC before top center BTDC before top dead center Btu British thermal units C Celsius CAAT Council of Advanced Automotive Trainers CAC charge air cooler CAFE corporate average fuel economy CALPAK calibration pack CARB California Air Resources Board CAS crank angle sensor CC catalytic converter CC cubic centimeters CCOT clutch cycling orifice tube CCV canister control valve CDI = Capacitive Discharge Ignition CEAB cold engine air bleed CECU central electronic control unit (Nissan) CESS cold engine sensor switch CFC Chlorofluorocarbons CFI continuous fuel injection cfm cubic feet per minute CID cubic inch displacement CKP crankshaft position sensor CKP REF crankshaft reference CL closed loop CMP camshaft position sensor CMP REF camshaft reference CO carbon monoxide CO2 carbon dioxide COP = coil on plug COP Coil On Plug ignition CPP clutch pedal position CPU central processing unit CTOX continuous trap oxidizer CTP closed throttle position CTS = Coolant Temperature Sensor CTVS choke thermal vacuum switch DB decibels DC direct current DEPS digital engine position sensor DFCO decel fuel cut-off mode DFI direct fuel injection DLC data link connector DOHC dual overhead cams DOT Department of Transportation DTC diagnostic trouble code DTM diagnostic test mode DVDSV differential vacuum delay and separator valve DVDV distributor vacuum delay valve DVOM digital volt ohm meter E=EFI Motor Used on the end of Motor type Eg l28E EBC = Electronic Boost Control EBCM electronic brake control module EBTCM electronic brake traction control module EC engine control ECA electronic control assembly ECCS Electronic Concentrated Control System (Nissan) ECL engine coolant level ECM engine control module ECT engine coolant temperature EDI(S) = Electronic Distributor less Ignition, add an "S" and it stands for System EEPROM electronically erasable programmable read only memory chip EFC electronic fuel control EFE = early fuel evaporation EFI electronic fuel injection EGR = Exhaust Gas Re-circulation EGR exhaust gas recalculation EGRT EGR temperature EI electronic ignition EM engine modification EMI electromagnetic interference EOS exhaust oxygen sensor EPA Environmental Protection Agency EPROM erasable programmable read only memory chip EVAP evaporative emission system F Fahrenheit FC fan control FEEPROM flash electrically erasable programmable read only memory FF flexible fuel FI = Fuel injection FMVSS Federal Motor Vehicle Safety Standards FP fuel pump FPROM flash erasable programmable read only memory FT fuel trim Ft.lb. foot pound FTP federal test procedure FUBAR F--ked Up Beyond All Repair FWD front-wheel drive Gal gallon GCM governor control module GEN generator GND ground GPM grams per mile H20 water HC hydrocarbon HEGO heated exhaust gas oxygen sensor Hg mercury HO2S heated oxygen sensor HO2S1 upstream heated oxygen sensor HO2S2 up or downstream heated oxygen sensor HO2S3 downstream heated oxygen sensor HP = Horse Power HVAC heating ventilation and air conditioning system HVS high voltage switch I/M inspection/maintenance I/P instrument panel IA intake air IAC idle air control IAT intake air temperature IC = Intercooler IC ignition control circuit IC integrated circuit ICM ignition control module ID inside diameter IFI indirect fuel injection IFS inertia fuel shutoff IGN ignition IIIBDFI If it isn't broke don't fix it IM240 inspection/maintenance 240 program IPC instrument panel cluster ISC idle speed control ISO International Standards Organization KHz kilohertz KISS Keep It Simple Stupid! KM kilometers KOEC key on, engine cranking KOEO key on, engine off KOER key on, engine running KPa kilopascals KS knock sensor KSM knock sensor module KV kilovolts L liters L24=Naturally Aspirated 2.4 Liter 6 Cylinder L series Found in 240Z L26=Naturally Aspirated 2.6 Liter 6 Cylinder L series Found in 260Z L26E=Naturally Aspirated 2.6 Liter 6 Cylinder L series Found in 260Z L28E=Naturally Aspirated 2.8 Liter 6 Cylinder L series Found in 280Z L28ET=Turbo Charged 2.8 Liter 6 Cylinder L series Found in 280ZX LB. ft. pound feet LCA = lower control arm LCD liquid crystal display LED light emitting diode LTFT long term fuel trim MACS Mobile Air Conditioning Society MAF = Mass Air Flow (meter/sensor) MAF mass airflow sensor MAMA Midwest Automotive Media Assn. MAP manifold absolute pressure sensor MAT manifold air temperature MC mixture control MDP manifold differential pressure MFI multiport fuel injection MIL malfunction indicator lamp MM millimeters MPFI multi point fuel injection MPG miles per gallon MPH miles per hour MPI multi port injection MS = Mega Squirt MS millisecond MSDS material safety data sheet MSnS-E = Mega Squirt n Spark-Extra MST manifold surface temperature mV mill volts MVZ manifold vacuum zone NA = Normally Aspirated NACAT National Assn. of College Automotive Teachers NATEF National Automotive Technician's Education Foundation NHTSA National Highway Traffic Safety Administration Nm Newton meters NOX oxides of nitrogen NVRAM nonvolatile random access memory O2S oxygen sensor OBD I onboard diagnostics generation one OBD II onboard diagnostics, second generation OBD onboard diagnostics OC oxidation catalyst OD outside diameter ODM output device monitor OE original equipment OEM original equipment manufacture OHC = over head cam OHC overhead cam OL open loop OS oxygen sensor OSC oxygen sensor storage P/B power brakes P/N part number PAIR pulsed secondary air injection PCM power train control module (supercedes ECM) PCV = Positive Crankcase Ventilation PCV positive crankcase ventilation PECV power enrichment control valve PERA Production Engine Rebuilders Assn. PNP park/neutral switch PPM parts per million PROM program read only memory computer chip PS power steering PSA pressure switch assembly PSI pounds per square inch PSP power steering pressure pt. pint PTOX periodic trap oxidizer PVA ported vacuum advance PVS ported vacuum switch QS9000 Quality assurance standard for OEM part suppliers Qt. quart RAM random access memory RFI radio frequency interference RM relay module ROM read only memory RPM revolutions per minute RPO regular production option RS Supplemental Restraint System (air bag) RWD rear-wheel drive SAE Society of Automotive Engineers SAP accelerator pedal SAVM spark advance vacuum modulator SC supecharger SCB supercharger bypass SDM sensing diagnostic mode SFC = sub frame connector SFI sequential fuel injection SIR Supplemental Inflatable Restraint (air bag) SOHC single overhead cam SRDV spark retard delay valve SRI service reminder indicator SRT system readiness test STFT short term fuel trim STS Service Technicians Society TACH tachometer TB throttle body TBI throtle body injection TC rod = tension compression rod or strut rod TC turbocharger TCC torque converter clutch TCCS Toyota Computer Controlled System TCM transmission or transaxle control module TDC top dead center TFP throttle fluid pressure TP throttle position TPP throttle position potentiometer TPS throttle position sensor TV throttle valve TVS thermal vacuum switch TVV thermal vacuum valve TWC three way caalyst TWC+OC three way + oxidation catalytic converter UCA = upper control arm V volts VAC volts alternating current VAF vane airflow sensor VAF volume airflow VCM vehicle control module VDC volts direct current VDV vacuum delay valve VIN vehicle identification number VR voltage regulator VS vehicle sensor VSS vehicle speed sensor WOT wide open throttle WSS wheel speed sensor WU-TWC warm up three way catalytic converter Datsun FQA Acronym page.xls