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Abbreviations
ABS - Anti Lock Braking System, NOT Automatic Braking System
A/C - Air conditioning
AC - Alternating Current, like what's in your house
AIR - Air Injection Reaction
BCM - Body Controller Module
BDC - Bottom Dead Center
CAI - Cold Air Intake, draws air from outside the engine bay
CCV - Crank Case Ventilation
CKP Sensor - Crankshaft Position Sensor (also called crank sensor)
CMFI - Central Multiport Fuel Injection
CMP Sensor - Camshaft Position Sensor (also called cam sensor) (Saturn S-Series cars do not have these)
CNP - Coil Near Plug, ignition coil is near spark plugs, but in central location
COP - Coil ON Plug. Exactly what it says, ignition coil is built into boot, doesn't use conventional spark plug wires.
CTS - Coolant Temperature Sensor
DC - Direct current, any current off of a battery
DI - Direct Injection
DIS - Distributorless Ignition System
DOHC - Dual Overhead Cam/Twin Cam
ECM - Engine Controller Module
ECTS - Engine Coolant Temperature Sensor
ECU - Engine Control Unit
EFI - Electronic Fuel Injection
EGR - Exhaust Gas Recirculation
EGR Valve - Device controlled by PCM that controls EGR flow.
EI - Electronic Ignition
FI - Forced Induction, extra air forced into engine
IAC - Idle Air Control
IAT - Intake Air Temperature
LCA - Lower Control Arm
LED - Light Emitting Diode
MAF - Mass Air Flow sensor
MAP - Manifold Absolute Pressure Sensor
MPFI - Multi Port Fuel Injection
N/A - Naturally Aspirated, air pulled into engine at atmospheric pressure
OBD1 - On Board Diagnostics system, first design
OBD2 - On Board Diagnostics system, second design, 1996+ federally mandated.
OE - Original Equipment
OEM - Original Equipment Manufacturer
OHV - Over Head Valve
OHC - Over Head Cam
PCV - Positive Crankcase Ventillation
PCM - Powertrain Control Module
PFI - Port Fuel Injection
SOHC - Single Overhead Cam
SPFI - Sequential Port Fuel Injection
SRI - Short Ram intake, essentially the same as WAI
TAM - Torque Axis Mount (also called Third Axis Mount)
TBI - Throttle Body Injection
TCC - Torque Converter Clutch/Timing Chain Cover/Timing Control Cover
TCM - Transmission Controller Module
TDC - Top Dead Center
TPI - Tuned Port Injection
TPS - Throttle Position Sensor
VSS - Vehicle Speed Sensor
WOT - Wide Open Throttle
Common Misconceptions
Engine - Your engine is not a motor. Engines use fuel, air and an ignition source. Essentially an oversized, fuel driven air pump.
Motor - electrical, typically via magnetic induction. example-starter, windshield wiper motor, power window motor.
NOS/Nitrous Express(NX) - These are brands, NOT the actual gas. The gas used is called Nitrous Oxide (N20)
Transmission - For rear/all wheel drive vehicles with engine facing forwards. (Longitudinally Mounted Engines)
Transaxle - For front wheel/ all wheel drive vehicles with engine facing sideways. (Transversely Mounted Engines)
Headers - plural, more than one header. Any inline engine, regardless of # of cylinders cannot have headers.
Quick Reference
Alternator - AC Generator, produces AC voltage which is then rectified through a series of diodes (rectifier bridge) into DC voltage.
Generator - DC generator used in the past (like 70's and before past)
Ram Air Intake - any intake design which uses air pressure created by vehicle motion to increase the air pressure inside of the intake manifold.
Header - Better version of an exhaust manifold, manufactured, not cast like a manifold
Diode - One way resistor that doesn't allow current to flow backwards in a circuit.
Supercharger - Belt driven forced induction
Turbocharger / Turbo / Snail - A component of a forced induction system comprised of 5 main components: exhaust housing, exhaust turbine, center cartridge, compressor wheel, and compressor housing. There are smaller pieces within the cartridge that determine the behavior and care required for a turbocharger and a all of the components function differently based on design, but the basic function is as follows: an exhaust gas driven turbine used to create positive atmospheric pressure in the intake charge. This power is derived from a turbine wheel, in the compressor housing, attached to said exhaust turbine via a shaft that connects the two sculpted wheels. The conditions are met when the exhaust gas reaches a certain velocity and overcomes the vacuum of the intake charge. This process is achieved through the compression of the exhaust gas (increase in velocity) which, in turn, pulls even more air into the intake charge due to the compression of the intake charge (increase of velocity and volume due to compression within a closed system
Engine/Transmission Codes
LL0 = DOHC 1.9L Saturn engine (twin cam)
LK0 - SOHC 1.9L Saturn engine (single cam, TBI)
L24 = SOHC 1.9L Saturn engine (single cam, MPFI)
L61 = 2.2L Ecotec engine
LE5 = 2.4L Ecotec engine
LSJ = 2.0L Ecotec engine (supercharged)
LAT = 2.4L Ecotec engine (hybrid)
L81 = 3.0L V6 engine
L66 = 3.5L V6 engine
LZ4 = 3.5L V6 engine
LK9 = 3.5L V6 engine
LY7 = 3.6L V6 engine
LLT = 3.6L V6 engine
LZ9 = 3.9L V6 engine
LGD = 3.9L V6 engine (E85 flex fuel)
MP2 - Saturn SOHC Manaul transaxle
MP3 - Saturn DOHC Manual transaxle
MP6 - Saturn SOHC Automatic transaxle
MP7 - Saturn DOHC Automatic transaxle
F23 = 5 speed Getrag transmission M86/M94
4T40-E = 4 speed automatic transaxle (4cyl)
4T45-E = 4 speed automatic transaxle (6cyl)
Tire Reference
P - Passenger (or LT - Light Truck
205 -Tread width in millimeters
55 - % height of side wall, based on tread width. example 205/55 means the sidewall is 55% as tall as the tread is wide
R15 - Radial (The make up of the tire belt) and Rim size.
Example: P205/55R15 91W M+S
P: Passenger
205: Tread Width (mm)
55: Section width (%)
R: Radial
15: Rim Diameter (inches)
91W: Service Description (Load and speed rating)
M+S: Mud & Snow
ABS - Anti Lock Braking System, NOT Automatic Braking System
A/C - Air conditioning
AC - Alternating Current, like what's in your house
AIR - Air Injection Reaction
BCM - Body Controller Module
BDC - Bottom Dead Center
CAI - Cold Air Intake, draws air from outside the engine bay
CCV - Crank Case Ventilation
CKP Sensor - Crankshaft Position Sensor (also called crank sensor)
CMFI - Central Multiport Fuel Injection
CMP Sensor - Camshaft Position Sensor (also called cam sensor) (Saturn S-Series cars do not have these)
CNP - Coil Near Plug, ignition coil is near spark plugs, but in central location
COP - Coil ON Plug. Exactly what it says, ignition coil is built into boot, doesn't use conventional spark plug wires.
CTS - Coolant Temperature Sensor
DC - Direct current, any current off of a battery
DI - Direct Injection
DIS - Distributorless Ignition System
DOHC - Dual Overhead Cam/Twin Cam
ECM - Engine Controller Module
ECTS - Engine Coolant Temperature Sensor
ECU - Engine Control Unit
EFI - Electronic Fuel Injection
EGR - Exhaust Gas Recirculation
EGR Valve - Device controlled by PCM that controls EGR flow.
EI - Electronic Ignition
FI - Forced Induction, extra air forced into engine
IAC - Idle Air Control
IAT - Intake Air Temperature
LCA - Lower Control Arm
LED - Light Emitting Diode
MAF - Mass Air Flow sensor
MAP - Manifold Absolute Pressure Sensor
MPFI - Multi Port Fuel Injection
N/A - Naturally Aspirated, air pulled into engine at atmospheric pressure
OBD1 - On Board Diagnostics system, first design
OBD2 - On Board Diagnostics system, second design, 1996+ federally mandated.
OE - Original Equipment
OEM - Original Equipment Manufacturer
OHV - Over Head Valve
OHC - Over Head Cam
PCV - Positive Crankcase Ventillation
PCM - Powertrain Control Module
PFI - Port Fuel Injection
SOHC - Single Overhead Cam
SPFI - Sequential Port Fuel Injection
SRI - Short Ram intake, essentially the same as WAI
TAM - Torque Axis Mount (also called Third Axis Mount)
TBI - Throttle Body Injection
TCC - Torque Converter Clutch/Timing Chain Cover/Timing Control Cover
TCM - Transmission Controller Module
TDC - Top Dead Center
TPI - Tuned Port Injection
TPS - Throttle Position Sensor
VSS - Vehicle Speed Sensor
WOT - Wide Open Throttle
Common Misconceptions
Engine - Your engine is not a motor. Engines use fuel, air and an ignition source. Essentially an oversized, fuel driven air pump.
Motor - electrical, typically via magnetic induction. example-starter, windshield wiper motor, power window motor.
NOS/Nitrous Express(NX) - These are brands, NOT the actual gas. The gas used is called Nitrous Oxide (N20)
Transmission - For rear/all wheel drive vehicles with engine facing forwards. (Longitudinally Mounted Engines)
Transaxle - For front wheel/ all wheel drive vehicles with engine facing sideways. (Transversely Mounted Engines)
Headers - plural, more than one header. Any inline engine, regardless of # of cylinders cannot have headers.
Quick Reference
Alternator - AC Generator, produces AC voltage which is then rectified through a series of diodes (rectifier bridge) into DC voltage.
Generator - DC generator used in the past (like 70's and before past)
Ram Air Intake - any intake design which uses air pressure created by vehicle motion to increase the air pressure inside of the intake manifold.
Header - Better version of an exhaust manifold, manufactured, not cast like a manifold
Diode - One way resistor that doesn't allow current to flow backwards in a circuit.
Supercharger - Belt driven forced induction
Turbocharger / Turbo / Snail - A component of a forced induction system comprised of 5 main components: exhaust housing, exhaust turbine, center cartridge, compressor wheel, and compressor housing. There are smaller pieces within the cartridge that determine the behavior and care required for a turbocharger and a all of the components function differently based on design, but the basic function is as follows: an exhaust gas driven turbine used to create positive atmospheric pressure in the intake charge. This power is derived from a turbine wheel, in the compressor housing, attached to said exhaust turbine via a shaft that connects the two sculpted wheels. The conditions are met when the exhaust gas reaches a certain velocity and overcomes the vacuum of the intake charge. This process is achieved through the compression of the exhaust gas (increase in velocity) which, in turn, pulls even more air into the intake charge due to the compression of the intake charge (increase of velocity and volume due to compression within a closed system
Engine/Transmission Codes
LL0 = DOHC 1.9L Saturn engine (twin cam)
LK0 - SOHC 1.9L Saturn engine (single cam, TBI)
L24 = SOHC 1.9L Saturn engine (single cam, MPFI)
L61 = 2.2L Ecotec engine
LE5 = 2.4L Ecotec engine
LSJ = 2.0L Ecotec engine (supercharged)
LAT = 2.4L Ecotec engine (hybrid)
L81 = 3.0L V6 engine
L66 = 3.5L V6 engine
LZ4 = 3.5L V6 engine
LK9 = 3.5L V6 engine
LY7 = 3.6L V6 engine
LLT = 3.6L V6 engine
LZ9 = 3.9L V6 engine
LGD = 3.9L V6 engine (E85 flex fuel)
MP2 - Saturn SOHC Manaul transaxle
MP3 - Saturn DOHC Manual transaxle
MP6 - Saturn SOHC Automatic transaxle
MP7 - Saturn DOHC Automatic transaxle
F23 = 5 speed Getrag transmission M86/M94
4T40-E = 4 speed automatic transaxle (4cyl)
4T45-E = 4 speed automatic transaxle (6cyl)
Tire Reference
P - Passenger (or LT - Light Truck
205 -Tread width in millimeters
55 - % height of side wall, based on tread width. example 205/55 means the sidewall is 55% as tall as the tread is wide
R15 - Radial (The make up of the tire belt) and Rim size.
Example: P205/55R15 91W M+S
P: Passenger
205: Tread Width (mm)
55: Section width (%)
R: Radial
15: Rim Diameter (inches)
91W: Service Description (Load and speed rating)
M+S: Mud & Snow
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