Frequently Asked Questions
Definitions & Abbreviations

2x4 – Piece of Lumber
4x2 – Two Wheel Drive 
4R100 – 99 and later SuperDuty automatic transmission
4x4 – Four Wheel Drive
4x4L – Four Wheel Drive Low Range
ABS – Anti-lock Brake System
ACC – Accessory Position (Ignition switch or fuse panel)
A/C – Air Conditioning
AIC – Automatic Idle Controller – a device that controls the idle speed of the engine. Can be used to maintain/charge batteries, etc.
AP – Accelerator Position Sensor (aka APS)
APCM – Auxiliary Powertrain Control Module
API – American Petroleum Institute 
ATF – Automatic Transmission Fluid
BARO – Barometric Pressure Sensor
BB – Bulletin Board (aka BBS)
BHA – Big Head Actuator (Vacuum Control Module on Waste Gate)
BOMBed – Better Off Modified Baby
BOO – Brake On/Off Switch (Mechanical Pedal)
BPA – Brake Pedal Applied Switch (Brake Line Pressure)
BSI – Brake Shift Interlock (Shift Lockout for Automatic)
BTW – By The Way
CAC – Charge Air Cooling
CAT - Catalytic Converter
CC – Crew Cab (4 door truck)
CDR – Crankcase Depression Regulator
Cetane – Fuel Rating for Diesel Fuel – Usually between 40 and 45
CID – Cubic Inch Displacement
CMP – Camshaft Position Sensor
CPS – Camshaft Position Sensor
CTD – Cummins Turbo Diesel
DI – Direct Injection
DLC – Data Link Connector (Scan Tool Receptacle)
DRN – Dead Right Now
DORA – Dealer Order Receipt Acknowledgment
DOT – Department of Transportation
DRW – Dual Rear Wheels
DTC – Diagnostic Trouble Code
DTE – Distance To Empty (Trip Computer Readout)
DVOM – Digital Volt-Ohm Meter
Dually – Dual Rear Wheels (aka Dooley)
E40D – Pre 99 Heavy Duty Ford automatic transmission
EB – Exhaust Brake
EBP – Exhaust Back Pressure Sensor
EBR – Exhaust Back Pressure Regulator (Oil Control Solenoid)
EBV – Exhaust Back Pressure Valve
ECM – Engine Control Module
EEC – Electronic Engine Control
EECM – Electronic Engine Control Module
EGT – Exhaust Gas Temperature
EOT – Engine Oil Temperature
EPR – Exhaust Back Pressure Regulator
ESOF – Electronic shift On the Fly 
ESP – Extended Service Plan (Ford Extended Warranty)
FAQ – Frequently Asked Questions
FDCS – Fuel Demand Command Signal
FMC – Ford Motor Company
FUBAR – Fouled Up Beyond All Recognition
FWIW – For What It's Worth
GAWR – Gross Axle Weight Rating
GCWR – Gross Combined Weight Rating
GEM – Generic Electronic Module
GM – General Motors
GP – Glow Plug
GPC – Glow Plug Control
GPL – Glow Plug Lamp (Wait to Start Light)
GPR – Glow Plug Relay
GPS – Global Positional Satellite – Device used for finding locations
GVWR – Gross Vehicle Weight Rating
HEUI – Hydraulically Actuated Electronically Controlled Unit Injection
Hubcentric – Wheel that is centered by the hub
IAT – Intake Air Temperature Sensor
ICQ – Internet Messaging System (can also be used for file transfers)
ICP – Injection Control Pressure Sensor
IDI – InDirect Injection
IDM – Injector Drive Module
IMHO – In My Honest/Humble Opinion
IMNOHO – In My Not-so-Humble Opinion
IO 10 T Error – (IDIOT) 
IPR – Injection Pressure Regular
Inch/lbs – Torque measurement – to get Ft/lbs divide by 12
IVS – Idle Validation Switch
KOEO – Key On, Engine Off
KOER – Key On, Engine Running
LB – Long Bed (Typically 8')
LMAO – Laughing My A** Off
LOL – Laughing Out Loud
LS – Limited Slip Read Axle 
Lugcentric – Wheel is centered by lugs
LWB – Long Wheel Base
MAF – Mass Air Flow Sensor
MAP – Manifold Absolute Pressure Sensor
MIL – Malfunction Indicator Lamp
MPG – Miles Per Gallon
NGS – New Generation Star (Ford Vehicle Diagnostic Scan Tool)
Number 1 Diesel – Thinner Fuel for cold climates, usually mixed with Number 2 during cold months
Number 2 Diesel - 'Normal' Diesel Fuel
NTSB – National Transportation Safety Board
OBD – On Board Diagnostics
OD – Over Drive
OEM – Original Equipment Manufacturer
OTC – Overhead Trip Computer
PATS – Passive Anti-Theft System
PBA – Parking Brake Applied Sensor
PID – Parameter Identification
PSD – Power Stroke Diesel
PCED – Powertrain Control/Emissions Diagnosis Service Manual
PCM – Power Control Module
PCV – Positive Crankcase Ventilation
PDL – Power Door Locks
PID - 
PITA – Pain In The A**
PM – Power Mirrors
PHM – Power Heated Mirrors
POS – Piece of S*** (not very good)
PS – Power Steering
PTO – Power Take Off
PTTTM – Power Telescoping Trailer Tow Mirrors
PW – Power Windows
PWM – Pulse Width Modulation
PYRO – Pyrometer AKA EGT gauge
RC – Regular Cab
RPITA – Royal Pain In The A**
ROFLMAO – Rolling On The Floor, Laughing My A** Off
RPM – Revolutions Per Minute
RSS – Reverse Sensing System
SAE – Society of Automotive Engineers
SB – Short Bed (aka 'Shorty)
S/C – Super Cab
SD – Super Duty
SES – Service Engine Soon (Warning light)
SNAFU – Situation Normal – All Fouled Up
SOL – Sure Out of Luck
SRS – Supplemental Restraint System (Air Bags)
SRW – Single Rear Wheel
SVT – Special Vehicle Team
SWB – Short Wheel Base
TC – Torque Converter
TCC – Torque Converter Clutch (Lockup)
TCIL – Transmission Control Indicator Light (Overdrive OFF)
TCS – Transmission Control Switch (Overdrive ON/OFF switch)
TFT – Transmission Fluid Temperature
Traction Lok – Ford Name for Limited Slip Differential
TPS – Throttle Position Sensor
TSB – Technical Service Bulletin – A Service Bulletin issued for possible problems
TTM – Trailer Towing Mirrors OR
TTM – Turbo Temperature Monitor
VAC – Volts – Alternating Current
VDC – Volts – Direct Current
VECI – Vehicle Emissions Control Information
VIN – Vehicle Identification Number – 17 Digit Number/Letter Combination
V-REF – Voltage Reference
VSS – Vehicle Speed Sensor
WGC – WasteGate Control (Actuator, Solenoid, Valve)
WOT – Wide Open Throttle