a while ago I know you guys had a post where you were posting abbreviations so people knew what they meant. I have a few to contribute, but I don't know where that post went so I figured I'd just start a new one, and maybe a mod could move it to where it needs to be.

anyway, here'* the list..

2V - Two (Venturi) Valve (two barrel carburetor)
4EAT - Four speed Electronic Automatic Transmission
4R70W - Four speed, Rear wheel drive, (up to) 700 lb/ft torque rated, Wide ratio
4R100 - Four speed, Rear wheel drive, (up to) 1000 lb/ft torque rated
4V - Four (Venturi) Valve (four barrel carburetor)
4WAL - Four Wheel Antilock
4WAS - Four Wheel Air Suspension
4WD - Four Wheel Drive
5R55W - Five speed, Rear wheel drive, (up to) 550 lb/ft torque rated, Wide ratio
A - Amperes
ABS - Antilock Brake System
AC - Alternating Current
A/C - Air Conditioning
ACC - Air Conditioning Clutch
ACC - Automatic Climate Control
ACCS - Air Conditioning Cyclic Switch
ACD - Air Conditioning Demand
ACL - Air cleaner
ACR4 - Air Conditioning Refrigerant, Recovery, Recycling, Recharging
ACON - Air Conditioning On
ACP - Air Conditioning Pressure
ACT - Air Charge Temperature (replaced with IAT)
A/D - Analog to Digital
ADU - Analog-Digital Unit
AFC - Air Flow Control
AFR - Air Fuel Ratio
AIR - Secondary air injection (formerly Thermactor air)
AIRB - Secondary Air Injection Bypass
AIRD - Secondary Air Injection Diverter
AIS - Automatic Idle Speed
ALC - Automatic Level Control
ALDL - Assembly Line Data Link (replaced with DLC)
ALT - Alternator (replaced with GEN)
AMB - Ambient
AOD - Automatic Overdrive
AODE - Automatic Overdrive Electronic (transmission)
AODE-W - Automatic Overdrive Electronic Wide (ratio transmission)
AP - Accelerator Pedal
API - American Petroleum Institute
APT - Adjustable part Throttle
ARC - Automatic Ride Control
ARS - Automatic Restraint System
ASARC - Air Suspension Automatic Ride Control
ASD - Automatic Shutdown
ASR - Acceleration Slip Regulation
A/T - Automatic Transmission/Transaxle
ATX - Automatic Transaxle
ATC - Automatic Temperature Control
ATDC - After Top Dead Center
ATM - Actuator Test Mode
AWD - All Wheel Drive
AWG - American Wire Gage
AXOD - Automatic Overdrive Transaxle
AXOD-E - Automatic Overdrive Transaxle - Electronically Controlled
B+ - Battery voltage
onditioning On
ACP - Air Conditioning Pressure
ACT - Air Charge Temperature (replaced with IAT)
A/D - Analog to Digital
ADU - Analog-Digital Unit
AFC - Air Flow Control
AFR - Air Fuel Ratio
AIR - Secondary air injection (formerly Thermactor air)
AIRB - Secondary Air Injection Bypass
AIRD - Secondary Air Injection Diverter
AIS - Automatic Idle Speed
ALC - Automatic Level Control
ALDL - Assembly Line Data Link (replaced with DLC)
ALT - Alternator (replaced with GEN)
AMB - Ambient
AOD - Automatic Overdrive
AODE - Automatic Overdrive Electronic (transmission)
AODE-W - Automatic Overdrive Electronic Wide (ratio transmission)
AP - Accelerator Pedal
API - American Petroleum Institute
APT - Adjustable part Throttle
ARC - Automatic Ride Control
ARS - Automatic Restraint System
ASARC - Air Suspension Automatic Ride Control
ASD - Automatic Shutdown
ASR - Acceleration Slip Regulation
A/T - Automatic Transmission/Transaxle
ATX - Automatic Transaxle
ATC - Automatic Temperature Control
ATDC - After Top Dead Center
ATM - Actuator Test Mode
AWD - All Wheel Drive
AWG - American Wire Gage
AXOD - Automatic Overdrive Transaxle
AXOD-E - Automatic Overdrive Transaxle - Electronically Controlled
B+ - Battery voltage
BARO - Barometric (pressure)
BCM - Body Control Module
BHP - Brake Horsepower
BLM - Block Learn Multiplier (replaced with LT FUEL TRIM)
B-LVL - Bilevel
BMAP - Barometric and Manifold Absolute Pressure
BOO - Brake On/Off
BP - Back Pressure
BPA - Bypass Air
BPW - base pulse width
BTDC - Before Top Dead Center
BTSI - Brake Transmission Shift Interlock
Btu - British thermal units
C3I - Computer Controlled Coil Ignition
CAC - Charge Air Cooler
Calif - California
CAN - Controller Area Network
CANP - Canister Purge
CASE - Cranking Angle Sensing Error
CC - Cruise Control
CCD - Chrysler Collision Detection
CCD - Computer Controlled Dwell
CCDIC - Climate Control Driver Information Center
CCM - Central Control Module
CCOT - Cycling Clutch Orifice Tube
CCP - Climate Control Panel
CCRM - Constant Control Relay Module
CCS - Coast Clutch Solenoid
CDR - Chrysler Diagnostic Readout
CDRV - Crankcase Depression Regulator Valve
CE - Commutator End
CEL - Check Engine Lamp (replaced with MIL)
CEAB - Cold Engine Air Bleed
CFI - Central Fuel Injection (replaced with TBI)
CFI - Cross Fire Injection
CID - Cubic Inch Displacement
CID - Cylinder Identification
CKP - Crankshaft Position
CKT - Circuit
CL - Closed Loop BARO - Barometric (pressure)
BCM - Body Control Module
BHP - Brake Horsepower
BLM - Block Learn Multiplier (replaced with LT FUEL TRIM)
B-LVL - Bilevel
BMAP - Barometric and Manifold Absolute Pressure
BOO - Brake On/Off
BP - Back Pressure
BPA - Bypass Air
BPW - base pulse width
BTDC - Before Top Dead Center
BTSI - Brake Transmission Shift Interlock
Btu - British thermal units
C3I - Computer Controlled Coil Ignition
CAC - Charge Air Cooler
Calif - California
CAN - Controller Area Network
CANP - Canister Purge
CASE - Cranking Angle Sensing Error
CC - Cruise Control
CCD - Chrysler Collision Detection
CCD - Computer Controlled Dwell
CCDIC - Climate Control Driver Information Center
CCM - Central Control Module
CCOT - Cycling Clutch Orifice Tube
CCP - Climate Control Panel
CCRM - Constant Control Relay Module
CCS - Coast Clutch Solenoid
CDR - Chrysler Diagnostic Readout
CDRV - Crankcase Depression Regulator Valve
CE - Commutator End
CEL - Check Engine Lamp (replaced with MIL)
CEAB - Cold Engine Air Bleed
CFI - Central Fuel Injection (replaced with TBI)
CFI - Cross Fire Injection
CID - Cubic Inch Displacement
CID - Cylinder Identification
CKP - Crankshaft Position
CKT - Circuit
CL - Closed Loop
CLC - Converter Lockup Clutch (replaced with TCC)
CLCC - Closed Loop Carburetor Control
CLNT - Coolant
CMFI - Central Multi-port Fuel Injection
CMP - Camshaft Position
CO - Carbon Monoxide
CO2 - Carbon Dioxide
COP - Coil On Plug
CPA - Connector Position Assurance
CPI - Central Port Fuel Injection
CPP - Clutch Pedal Position
CPS - Central Power Supply
CPU - Central Processing Unit
CRT - Cathode Ray Tube
CS - Charging System
CSE GND - PCM Case Ground
CTP - Closed Throttle Position (switch)
CTS - Coolant Temperature Sensor
CV - Constant Velocity
DAB - Delayed Accessory Bus
dB - Decibels
dBA - decibels on A-weighted scale
DC - Direct Current
DE - Drive End
DEC - Digital Electronic Controller
DERM - Diagnostic Energy Reserve Module
DFI - Direct Fuel Injection
DI - Distributor Ignition
DIC - Driver Information Center
DIS - Direct (distributorless) Ignition System (replaced with EI)
DIST - Distributor
DLC - Data Link Connector
DOHC - Double Overhead Cam
DOL - Data Output Line
DPFE - Differential Pressure Feedback EGR
DPI - Dual Plug Inhibit
DRB - Diagnostic Readout Box
DRL - Daytime Running Lamps
DSS - Downshift Solenoid
DTC - Diagnostic Trouble Code
DTM - Diagnostic Test Mode
DVO
CLC - Converter Lockup Clutch (replaced with TCC)
CLCC - Closed Loop Carburetor Control
CLNT - Coolant
CMFI - Central Multi-port Fuel Injection
CMP - Camshaft Position
CO - Carbon Monoxide
CO2 - Carbon Dioxide
COP - Coil On Plug
CPA - Connector Position Assurance
CPI - Central Port Fuel Injection
CPP - Clutch Pedal Position
CPS - Central Power Supply
CPU - Central Processing Unit
CRT - Cathode Ray Tube
CS - Charging System
CSE GND - PCM Case Ground
CTP - Closed Throttle Position (switch)
CTS - Coolant Temperature Sensor
CV - Constant Velocity
DAB - Delayed Accessory Bus
dB - Decibels
dBA - decibels on A-weighted scale
DC - Direct Current
DE - Drive End
DEC - Digital Electronic Controller
DERM - Diagnostic Energy Reserve Module
DFI - Direct Fuel Injection
DI - Distributor Ignition
DIC - Driver Information Center
DIS - Direct (distributorless) Ignition System (replaced with EI)
DIST - Distributor
DLC - Data Link Connector
DOHC - Double Overhead Cam
DOL - Data Output Line
DPFE - Differential Pressure Feedback EGR
DPI - Dual Plug Inhibit
DRB - Diagnostic Readout Box
DRL - Daytime Running Lamps
DSS - Downshift Solenoid
DTC - Diagnostic Trouble Code
DTM - Diagnostic Test Mode
DVOM - Digital Volt-Ohmmeter
E4OD - Electronic 4-Speed Overdrive
EAC - Electronic Air Control (replaced with AIR)
EAIR - Electronic Secondary Air Injection
EBCM - Electronic Brake Control Module
EBTCM - Electronic Brake and Traction Control Module
EBP - Exhaust Back Pressure
E&C - Entertainment and Comfort
ECA - Electronic Control Assembly (replaced with PCM)
ECC - Electronic Climate Control
ECI - Extended Compressor at Idle
ECM - Electronic Control Module
ECM - Engine Control Module
ECS - Emission Control System
ECT - Engine Coolant Temperature (Switch, Sensor)
ECU - Electronic Control Unit
EDIS - Electronic Direct Ignition System (replaced with EI)
EEC - Electronic Engine Control
EEPROM - Electronically Erasable Programmable Read Only Memeory
EEVIR - Evaporator Equalized Values In Receiver
EFE - Early Fuel Evaporation
EFI - Electronic Fuel Injection
EGO - Exhaust Gas Oxygen (replaced with O2S)
EGOG - EGO Ground
EGR - Exhaust Gas Recirculation
EGRC - Exhaust Gas Recirculation Control
EGRT - Exhaust Gas Recirculation Temperature (switch)
EGR TVV - Exhaust Gas Recirculation Thermal Vacuum Valve
EGRV - Exhaust Gas Recirculation Vent
EGTS - Exhaust Gas Temperature Switch (replaced with EGRT)
EI - Electronic Ignition (includes DistriM - Digital Volt-Ohmmeter
E4OD - Electronic 4-Speed Overdrive
EAC - Electronic Air Control (replaced with AIR)
EAIR - Electronic Secondary Air Injection
EBCM - Electronic Brake Control Module
EBTCM - Electronic Brake and Traction Control Module
EBP - Exhaust Back Pressure
E&C - Entertainment and Comfort
ECA - Electronic Control Assembly (replaced with PCM)
ECC - Electronic Climate Control
ECI - Extended Compressor at Idle
ECM - Electronic Control Module
ECM - Engine Control Module
ECS - Emission Control System
ECT - Engine Coolant Temperature (Switch, Sensor)
ECU - Electronic Control Unit
EDIS - Electronic Direct Ignition System (replaced with EI)
EEC - Electronic Engine Control
EEPROM - Electronically Erasable Programmable Read Only Memeory
EEVIR - Evaporator Equalized Values In Receiver
EFE - Early Fuel Evaporation
EFI - Electronic Fuel Injection
EGO - Exhaust Gas Oxygen (replaced with O2S)
EGOG - EGO Ground
EGR - Exhaust Gas Recirculation
EGRC - Exhaust Gas Recirculation Control
EGRT - Exhaust Gas Recirculation Temperature (switch)
EGR TVV - Exhaust Gas Recirculation Thermal Vacuum Valve
EGRV - Exhaust Gas Recirculation Vent
EGTS - Exhaust Gas Temperature Switch (replaced with EGRT)
EI - Electronic Ignition (includes Distributorless Ignition System, formerly DIS)
ELC - Electronic Level Control
EMB - Electromagnetic Brakes
EMF - Electromotive Force (voltage)
EMI - Electromagnetic Interference
EMR - Electronic Module Retard
EMR - Emission Maintenance Reminder
EOT - Engine Oil Temperature
EPA - Environmental Protection Agency
EPC - Electronic Pressure Control
EPR - Exhaust Pressure Regulator
EPT - EGR Pressure Transducer (replaced with PFE)
EPROM - Erasable Programmable Read Only Memory
ESC - Electronic Spark Control
ESD - Electrostatic Discharge
EST - Electronic Spark Timing
ETBE - Ethyl Tertiary Butyl Ether
ETC - Electronic Temperature Control
ETCC - Electronic Touch Climate Control
ETR - Electronically Tuned Receiver
EVAP - Evaporative Emission
EVAP Canister Purge - Evaporative Emmision Canister Purge
EVIC - Electronic Vehicle Information Center
EVO - Electronic Vehicle Orifice
EVP - EGR Valve Position
EVR - EGR Vacuum Regulator
EXH - Exhaust
FC - Fan Control
FBC - Feedback Carburetor
FDBK - Feedback
FDC - Fuel Data Center
FED - Federal (except California)
FF - Flexible Fuel
FI - Fuel Injection
FIPL - Fuel Injection Pump Lever
FMEM - Failure Mode Effects Management
FMVSS - Federal Motor Vehicle Safety Standards
FP - Fuel butorless Ignition System, formerly DIS)
ELC - Electronic Level Control
EMB - Electromagnetic Brakes
EMF - Electromotive Force (voltage)
EMI - Electromagnetic Interference
EMR - Electronic Module Retard
EMR - Emission Maintenance Reminder
EOT - Engine Oil Temperature
EPA - Environmental Protection Agency
EPC - Electronic Pressure Control
EPR - Exhaust Pressure Regulator
EPT - EGR Pressure Transducer (replaced with PFE)
EPROM - Erasable Programmable Read Only Memory
ESC - Electronic Spark Control
ESD - Electrostatic Discharge
EST - Electronic Spark Timing
ETBE - Ethyl Tertiary Butyl Ether
ETC - Electronic Temperature Control
ETCC - Electronic Touch Climate Control
ETR - Electronically Tuned Receiver
EVAP - Evaporative Emission
EVAP Canister Purge - Evaporative Emmision Canister Purge
EVIC - Electronic Vehicle Information Center
EVO - Electronic Vehicle Orifice
EVP - EGR Valve Position
EVR - EGR Vacuum Regulator
EXH - Exhaust
FC - Fan Control
FBC - Feedback Carburetor
FDBK - Feedback
FDC - Fuel Data Center
FED - Federal (except California)
FF - Flexible Fuel
FI - Fuel Injection
FIPL - Fuel Injection Pump Lever
FMEM - Failure Mode Effects Management
FMVSS - Federal Motor Vehicle Safety Standards
FP - Fuel Pump
FPM - Fuel Pump Monitor
FPRC - Fuel Pressure Regulator Circuit
FRC - Forced
FT - Fuel Trim
FTP - Federal Test Procedure
FWD - Front Wheel Drive
GA - Gage
GCW - Gross Combination Weight
GEN - Generator
GND - Ground
GVWR - Gross Vehicle Weight Rating
H - Hydrogen
H2O - Water
HC - Hydrocarbons
H/CMPR - High Compression
HD - Heavy Duty
HDC - Heavy Duty Cooling
HEGO - Heated EGO (replaced with HO2S)
HFC - High Fan Control
HFP - High Fuel Pump
Hg - Mercury
Hi Alt - Hi Altitude
HLOS - Hardware Limited Operating Strategy
HO - High Output
HO2S - Heated Oxygen Sensor
hp - Horsepower
HPL - High Pressure Liquid
HPS - High Performance System
HPV - High Pressure Vapour
HSC - High Swirl Combustion
HUD - Heads Up Display
HVAC - Heater-Vent-Air Conditioning
HVACM - Heater-Vent-Air Conditioning Module
HVM - Heater Vent Mondule
Hz - Hertz
IAC - Idle Air Control
IAT - Intake Air Temperature
iATN - International Automotive Technicians Network
IC - Ignition Control
IC - Integrated Circuit
ICM - Ignition Control Module
ICP - Injection Control Pressure
ID - Identification
ID - Inside Diameter
IDI - Integrated Direct Ignition
IDM - Injector Driver Module
IFS - Inertia Fuel Pump
FPM - Fuel Pump Monitor
FPRC - Fuel Pressure Regulator Circuit
FRC - Forced
FT - Fuel Trim
FTP - Federal Test Procedure
FWD - Front Wheel Drive
GA - Gage
GCW - Gross Combination Weight
GEN - Generator
GND - Ground
GVWR - Gross Vehicle Weight Rating
H - Hydrogen
H2O - Water
HC - Hydrocarbons
H/CMPR - High Compression
HD - Heavy Duty
HDC - Heavy Duty Cooling
HEGO - Heated EGO (replaced with HO2S)
HFC - High Fan Control
HFP - High Fuel Pump
Hg - Mercury
Hi Alt - Hi Altitude
HLOS - Hardware Limited Operating Strategy
HO - High Output
HO2S - Heated Oxygen Sensor
hp - Horsepower
HPL - High Pressure Liquid
HPS - High Performance System
HPV - High Pressure Vapour
HSC - High Swirl Combustion
HUD - Heads Up Display
HVAC - Heater-Vent-Air Conditioning
HVACM - Heater-Vent-Air Conditioning Module
HVM - Heater Vent Mondule
Hz - Hertz
IAC - Idle Air Control
IAT - Intake Air Temperature
iATN - International Automotive Technicians Network
IC - Ignition Control
IC - Integrated Circuit
ICM - Ignition Control Module
ICP - Injection Control Pressure
ID - Identification
ID - Inside Diameter
IDI - Integrated Direct Ignition
IDM - Injector Driver Module
IFS - Inertia Fuel Shutoff
IGN - Ignition
ILC - Idle Load Compensator
I/M - Inspection Maintenance
IMRC - Intake Manifold Runner Control
INJ - Injector
INP - Input
INT - Integrator (replaced with ST FUEL TRIM)
I/P - Instrument Panel
IPC - Instrument Panel Cluster
IPR - Injector Pressure Regulator
ISC - Idle Speed Control
ISO - International Standards Organization
ISS - Input Shaft Speed
ITS - Idle Tracking Switch
IVS - Idle Validation Switch
IVSC - Integrated Vehicle Speed ControlKAM - Keep Alive Memory
KAPWR - Keep Alive power
kg - Kilogram
kHz - Kilohertz
km - Kilometer
KOEO - Key On Engine Off
KOER - Key On Engine Running
kPa - Kilopascals
KS - Knock Sensor
kV - Kilovolts
L4 - Four Cylinder Inline Engine
LV8 - Load Variable
LCD - Liquid Crystal Display
LED - Light Emitting Diode
LFC - Low Fan Control
LFP - Low Fuel pump
LT - Long Term (Fuel Trim) LTPWS - Low Tire Pressure Warning System
MAF - Mass Air Flow
MAP - Manifold Absolute Pressure
MAT - Manifold Air Temperature (replaced with IAT)
MC - Measuring Core
MC - Mixture Control
MCU - Microprocessor Control unit (replaced with PCM) MD - Modulated Displacement
MDP - Manifold Differential Pressure
MECS - Mazda Electronic Control System
MEMCAL Shutoff
IGN - Ignition
ILC - Idle Load Compensator
I/M - Inspection Maintenance
IMRC - Intake Manifold Runner Control
INJ - Injector
INP - Input
INT - Integrator (replaced with ST FUEL TRIM)
I/P - Instrument Panel
IPC - Instrument Panel Cluster
IPR - Injector Pressure Regulator
ISC - Idle Speed Control
ISO - International Standards Organization
ISS - Input Shaft Speed
ITS - Idle Tracking Switch
IVS - Idle Validation Switch
IVSC - Integrated Vehicle Speed ControlKAM - Keep Alive Memory
KAPWR - Keep Alive power
kg - Kilogram
kHz - Kilohertz
km - Kilometer
KOEO - Key On Engine Off
KOER - Key On Engine Running
kPa - Kilopascals
KS - Knock Sensor
kV - Kilovolts
L4 - Four Cylinder Inline Engine
LV8 - Load Variable
LCD - Liquid Crystal Display
LED - Light Emitting Diode
LFC - Low Fan Control
LFP - Low Fuel pump
LT - Long Term (Fuel Trim) LTPWS - Low Tire Pressure Warning System
MAF - Mass Air Flow
MAP - Manifold Absolute Pressure
MAT - Manifold Air Temperature (replaced with IAT)
MC - Measuring Core
MC - Mixture Control
MCU - Microprocessor Control unit (replaced with PCM) MD - Modulated Displacement
MDP - Manifold Differential Pressure
MECS - Mazda Electronic Control System
MEMCAL - Memory Calibration
MFI - Multiport Fuel Injection
MIC - Mechanical Instrument Cluster
MIL - Malfunction Indicator Lamp
MLP - Manual Lever Position
MPFI - Multiport Fuel Injection
ms - Millisecond
MSFF - Miles Since First Fail
MSLF - Miles Since Last Fail
MST - Manifold Surface Temperature
MTBE - Methyl Tertiary Butyl Ether
MTV - Manifold Tuning Valve
MV - Megavolt
mV - Millivolt
MVLPS - Manual Valve Lever Position Sensor
NAAO - North American Automotive Operations
NC - Normally Closed
NEG - Negative
NLGI - National Lubricating Grease Institute
N-m - Newton Meters
NO - Normally Open
NOx - Nitrogen Oxides
NPTC - National Pipe Thread Coarse
NPTF - National Pipe Thread Fine
O2 - Oxygen
O2S - Oxygen Sensor
OBD - On Board Diagnostics
OBD II - On Board Diagnostics, Generation 2
OC - Oxidation Catalytic Converter
OD - Outside Diameter
OD - Overdrive
OE - Original Equipment
OEM - Original Equipment Manufacturer
OHC - Overhead Camshaft
OL - Open Loop
ORC - Oxidation Reduction Converter
OTIS - Overhead Travel Information System
PAG - Polyalkylene Glycol
PAIR - Pulsed Secondary Air Injection
PASS - Personalized Automotive Security System
PCB - Printed Circuit Board
PCM - Powertrain Control Module
- Memory Calibration
MFI - Multiport Fuel Injection
MIC - Mechanical Instrument Cluster
MIL - Malfunction Indicator Lamp
MLP - Manual Lever Position
MPFI - Multiport Fuel Injection
ms - Millisecond
MSFF - Miles Since First Fail
MSLF - Miles Since Last Fail
MST - Manifold Surface Temperature
MTBE - Methyl Tertiary Butyl Ether
MTV - Manifold Tuning Valve
MV - Megavolt
mV - Millivolt
MVLPS - Manual Valve Lever Position Sensor
NAAO - North American Automotive Operations
NC - Normally Closed
NEG - Negative
NLGI - National Lubricating Grease Institute
N-m - Newton Meters
NO - Normally Open
NOx - Nitrogen Oxides
NPTC - National Pipe Thread Coarse
NPTF - National Pipe Thread Fine
O2 - Oxygen
O2S - Oxygen Sensor
OBD - On Board Diagnostics
OBD II - On Board Diagnostics, Generation 2
OC - Oxidation Catalytic Converter
OD - Outside Diameter
OD - Overdrive
OE - Original Equipment
OEM - Original Equipment Manufacturer
OHC - Overhead Camshaft
OL - Open Loop
ORC - Oxidation Reduction Converter
OTIS - Overhead Travel Information System
PAG - Polyalkylene Glycol
PAIR - Pulsed Secondary Air Injection
PASS - Personalized Automotive Security System
PCB - Printed Circuit Board
PCM - Powertrain Control Module
PCS - Pressure Control Solenoid
PCV - Positive Crankcase Ventilation
PFE - Pressure Feedback EGR
PFI - Port Fuel Injection
PID - Parameter Identification
PIP - Profile Ignition Pickup (replaced with CKP)
PKE - Passive Keyless Entry
PM - Permanent Magnet
PMD - Pump Mounted Driver
P/N - Part Number
PNP - Park/Neutral Position
POA - Pilot Operated Absolute
POS - Positive
POT - Potentiometer
PROM - Programmable Read Only Memory
PS - Power Steering
PSA - Pressure Switch Assembly
PSOM - Programmable Speedometer/Odometer Module
P/* - Power Steering
PSP - Power Steering Pressure
PTC - Pending Trouble Code
PTU - Part Throttle Unlock
PWM - Pulse Width Modulation
QDM - Quad Driver Module
RABS - Rear Antilock Brake System
RAM - Random Access Memory
RAP - Retained Access Power
REDOX - Reduction Oxidation Catalytic Converter
REF - Reference
RF - Radio Frequency RFI - Radio Frequency Interference
RKE - Remote Keyless Entry
RM - Relay Module
ROM - Read Only Memory
RPM - Revolutions Per Minute
RPO - Regular Production Option
RTD - Real Time Dampening
RTN - Return
RTV - Room Temperature Vulcanizing
RVP - Reid Vapour Pressure
RWAL - Rear Wheel Anti-lock
RWD - Rear Wheel Drive
SAE - Society of AutomotivPCS - Pressure Control Solenoid
PCV - Positive Crankcase Ventilation
PFE - Pressure Feedback EGR
PFI - Port Fuel Injection
PID - Parameter Identification
PIP - Profile Ignition Pickup (replaced with CKP)
PKE - Passive Keyless Entry
PM - Permanent Magnet
PMD - Pump Mounted Driver
P/N - Part Number
PNP - Park/Neutral Position
POA - Pilot Operated Absolute
POS - Positive
POT - Potentiometer
PROM - Programmable Read Only Memory
PS - Power Steering
PSA - Pressure Switch Assembly
PSOM - Programmable Speedometer/Odometer Module
P/* - Power Steering
PSP - Power Steering Pressure
PTC - Pending Trouble Code
PTU - Part Throttle Unlock
PWM - Pulse Width Modulation
QDM - Quad Driver Module
RABS - Rear Antilock Brake System
RAM - Random Access Memory
RAP - Retained Access Power
REDOX - Reduction Oxidation Catalytic Converter
REF - Reference
RF - Radio Frequency RFI - Radio Frequency Interference
RKE - Remote Keyless Entry
RM - Relay Module
ROM - Read Only Memory
RPM - Revolutions Per Minute
RPO - Regular Production Option
RTD - Real Time Dampening
RTN - Return
RTV - Room Temperature Vulcanizing
RVP - Reid Vapour Pressure
RWAL - Rear Wheel Anti-lock
RWD - Rear Wheel Drive
SAE - Society of Automotive Engineers
SAW - Spark Angle Word
SBDS - Service Bay Diagnostic System
SBEC - Single Board Engine Controller (replaced with PCM)
SBS - Supercharger Bypass Solenoid
SBT - Serial Bus Traveller
SC - Supercharger
SCB - Supercharger Bypass
SDM - Sensing and Diagnostic Module
SDV - Spark Delay Valve
SEFI - Sequential Electronic Fuel Injection (replaced with SFI)
SEO - Special Equipment Option
SES - Service Engine Soon (replaced with MIL)
SFI - Sequential Multiport Fuel Injection
SHO - Super High Output
SIG RTN - Signal Return
SIL - Shift Indicator Lamp
SIR - Supplemental Inflatable Restraint
SMEC - Single Module Engine Controller (replaced with PCM)
SNSR - Sensor
SO2 - Sulphur Dioxide
SPD - Speed
SPOUT - Spark Output
SPS - Service Programming System
SRC - Selective Ride Control
SS - Shift Solenoid
ST - Scan Tool
STI - Self Test Input
STO - Self Test Output
STS - Service Technicians Society
TAB - Thermactor Air Bypass (replaced with AIRB)
TAC - Throttle Actuator Control
TAD - Thermactor Air Divert (replaced with AIRD)
TACH - Tachometer
TAP - Transmission Adaptive Pressure
TB - Throttle Body
TBI - Throttle Body Fuel Injection
TC - Turbocharger
TCC - Torque Converter Clutch
TCIL - Transmissie Engineers
SAW - Spark Angle Word
SBDS - Service Bay Diagnostic System
SBEC - Single Board Engine Controller (replaced with PCM)
SBS - Supercharger Bypass Solenoid
SBT - Serial Bus Traveller
SC - Supercharger
SCB - Supercharger Bypass
SDM - Sensing and Diagnostic Module
SDV - Spark Delay Valve
SEFI - Sequential Electronic Fuel Injection (replaced with SFI)
SEO - Special Equipment Option
SES - Service Engine Soon (replaced with MIL)
SFI - Sequential Multiport Fuel Injection
SHO - Super High Output
SIG RTN - Signal Return
SIL - Shift Indicator Lamp
SIR - Supplemental Inflatable Restraint
SMEC - Single Module Engine Controller (replaced with PCM)
SNSR - Sensor
SO2 - Sulphur Dioxide
SPD - Speed
SPOUT - Spark Output
SPS - Service Programming System
SRC - Selective Ride Control
SS - Shift Solenoid
ST - Scan Tool
STI - Self Test Input
STO - Self Test Output
STS - Service Technicians Society
TAB - Thermactor Air Bypass (replaced with AIRB)
TAC - Throttle Actuator Control
TAD - Thermactor Air Divert (replaced with AIRD)
TACH - Tachometer
TAP - Transmission Adaptive Pressure
TB - Throttle Body
TBI - Throttle Body Fuel Injection
TC - Turbocharger
TCC - Torque Converter Clutch
TCIL - Transmission Control Indicator Lamp
TCM - Transmission Control Module
TCS - Traction Control System
TCS - Transmission Control Switch
TDC - Top Dead Center
TEMP - Temperature
TFI - Thick Film Integrated (replaced with DI)
TFT - Transmission Fluid Temperature
THM - Turbo Hydra-Matic
TOT - Transmission Oil Temperature
TP - Throttle Position
TPI - Tuned Port Injection
TPM - Tire Pressure Monitor
TR - Transmission Range
TSS - Transmission Speed Sensor
TV - Throttle Valve
TVS - Thermal Vacuum Switch
TVV - Thermal Vacuum Valve
TWC - Three Way Catalytic Converter
TXV - Thermal Expansion Valve
UIDI - Up-Integrated Direct Ignition
UART - Universal Asynchronous Receiver-Transmitter
UD - Underdrive
V - Volts
VAC - Vacuum
VAF - Volume (or Vane) Air Flow
VAT - Vane Air Temperature (replaced with IAT)
VATS - Vehicle AntiTheft System
VCC - Viscous Converter Clutch
VCM - Vehicle Control Module
VCRM - Variable Control Relay Module
VDOT - Variable Displacement Orifice Tube
VDV - Vacuum Delay Valve
VECI - Vehicle Emission Control Information (label)
VF - Vacuum Flourescent
VIN - Vehicle Identification Number
VMV - Vacuum Modulator Valve
VNT - Variable Nozzle Turbocharger
VOTM - Vacuum Operated Throttle Modulator
VPWR - on Control Indicator Lamp
TCM - Transmission Control Module
TCS - Traction Control System
TCS - Transmission Control Switch
TDC - Top Dead Center
TEMP - Temperature
TFI - Thick Film Integrated (replaced with DI)
TFT - Transmission Fluid Temperature
THM - Turbo Hydra-Matic
TOT - Transmission Oil Temperature
TP - Throttle Position
TPI - Tuned Port Injection
TPM - Tire Pressure Monitor
TR - Transmission Range
TSS - Transmission Speed Sensor
TV - Throttle Valve
TVS - Thermal Vacuum Switch
TVV - Thermal Vacuum Valve
TWC - Three Way Catalytic Converter
TXV - Thermal Expansion Valve
UIDI - Up-Integrated Direct Ignition
UART - Universal Asynchronous Receiver-Transmitter
UD - Underdrive
V - Volts
VAC - Vacuum
VAF - Volume (or Vane) Air Flow
VAT - Vane Air Temperature (replaced with IAT)
VATS - Vehicle AntiTheft System
VCC - Viscous Converter Clutch
VCM - Vehicle Control Module
VCRM - Variable Control Relay Module
VDOT - Variable Displacement Orifice Tube
VDV - Vacuum Delay Valve
VECI - Vehicle Emission Control Information (label)
VF - Vacuum Flourescent
VIN - Vehicle Identification Number
VMV - Vacuum Modulator Valve
VNT - Variable Nozzle Turbocharger
VOTM - Vacuum Operated Throttle Modulator
VPWR - Vehicle Power
VR - Vacuum Regulator
VREF - Voltage Reference
VRV - Vacuum Reducer Valve
VRIS - Variable Resonance Induction System
VSS - Vehicle Speed Sensor
VTA - Vehicle Theft Alarm
VTSS - Vehicle Theft Security System
WAC - Wide Open Throttle A/C Cutoff
W/B - Wheelbase
WOT - Wide Open Throttle
WSS - Wheel Speed Sensor
WU-OC - Warmup Oxidation Catalytic Converter
WU-TWC - Warmup Three Way Catalytic Converter

that is just a few

I think the only thing you missed was AM and FM

AM- amplitude modulation
FM- frequency modulation

LOL

u forgot YHTMTOYH!
You Have Too Much Time On Your Hands!

I must be

WAYSH - why are you still here

because I have MSN messenger which tells me whenever I get email (and I get an email from this site everytime one of my posts is replied to) so I can't help but come back and see what'* new on the site. lol. BUT I am leaving now. I'm going to get off line. lol.

Ok, guys. Let'* try to keep the chat in the lounge. I'm not afraid to ground you again!