Turbine Doc
Just Another Diesel Guy
A lot of acronyms used on the forums, the 6.5 is no different, here are some of the common ones, add to the list as you think of them:
PMD/FSD = same device Pump Mounted Driver (when installed on IP) or Fuel Solenoid Driver (when removed from IP) electronic device controls operation of fuel solenoid.
IP = Injection Pump
LP = low pressure or lift pump depending on users context
HP = high pressure, also can be Hp=horsepower depending on contex
6.5 LTD = 6.5 litre turbo diesel 6.5L= approx 396 CID cubic inch displacement
CDR= crankcase depression regulator "tuna can" controls crankcase pressure vents to turbo inlet
EGR= Exhaust gas regulation valve on emission engines center rear of inlet
L56= "emissions engine" usually at 1/2 T truck or some LD frame 3/4Ts (S engine 8th VIN digit code)
L65= non emission HD truck engine (F engine 8th VIN digit code)
LD/HD= light or heavy duty frame, HD frame and suspension a little "beefier" weigh more, heavier tow/load capacity. Check RPO codes HD is usually L65 code
RPO= regular production options ??? list inbyour glove box of options your truck was delivered with
CAT= catalytic converter slang generally L56 trucks have this
WG= waste gate, flapper in turbos outlet that aids in spool up of turbo to reduce lag time until turbo camn make efficient boost
PCM= powertrain control module brain/computer that runs it all.
OPS= oil pressure switch
WIF= water in fuel
SES= service engine soon/check engine in GM manual this is MIL malfunction indicator lite
APP= accellerator pedal position, electronic module on go pedal that talks to the PCM for more or less fuel from the IP
OBD I or II= on board diagnostic generation I or II, in 1996 Congress mandated all US mfg use common diagnostic port and naming conventions OBDII trucks have electronic IP and require scan tool to read codes and perform diagnostic tests.
MAP= manifold absolute pressure mounted on upper intake gives Boost pressure input to PCM in OBD II L65 also provides baro conditions to PCM at start up,
Baro= barometric sensor in OBDI trucks mounted on firewall provides baro input to PCM, in L56 OBD II it also serves as the EGR feedback mechanism, not used in L65 OBDII which gets its baro from MAP (see MAP), both look the same but are keyed to only accept correct harness connection, have to make sure you get the correct sensor.
MAF= mass air flow flow sensor used in L56 to tell PCM how much flow in turbo inlet used to help calculate proper EGR flow
VSS= vehicle speed sensor
IAT= inlet air temp gives input to PCM how hot post turbo air is
ECT= engine coolant temp
IC= intercooler or aftercooler air to air heat exchanger that drops post turbo compressed air temp
WMI= water mist injection another way to cool turbo air using fine water mist
DTC= diagnostic trouble code
WGDC = waste gate duty cycle, The percentage of waste gate caluculated by the PCM that determines boost levels.
EGT = exhaust gas tempatures. When you turn your WGDC up you should watch your EGT's 1100-1200*F max. allowable tempatures.
EBP =exhaust back pressure is what turns the turbine.
TSM = Timing stepper motor. tsm advances the optical on the cam ring.
CTS = Coolant tempature sensor. It's in the way when you try to loosen the pump bolts
IIRC= If I Remember Correctly, which I sometimes don't so heavy emphasis on 1str word IF
General Chat acronyms:
BBIAB = Be back in a bit
BRB = Be right back
BTW = By the way
FOS = Full of S**t
FWIW = For what it's worth
IIRC = If I Recall Correctly
IMHO = In my honest opinion OR In my Honest opinion
IMO = In my opinion
JMO = Just my opinion
LMAO = Laughing my A$$ Off
LOL = Laughing out loud
N/A = Not applicable, not available can also mean naturally aspirated
NFG = No F'n good
POS = Piece of S**t
ROFLMAO = Rolling on the Floor laughing my A$$ off.
RTFM = Read the f***in manual
STFU = Shut the f*** up
TIA = Thanks in advance
TTYL = Talk to you later
TY = Thank you
YW = Your welcome
Truck Acronyms and abbreviations:
#1 = #1 Diesel Fuel (winter diesel fuel)
#2 = #2 Diesel Fuel
APP = Accelerator Pedal Position
BCM = Body control module. The module that controls various body related functions such as power windows, power locks, interior lights etc.
BOV = Blow off valve
CAC = Charge air cooler otherwise called Intercooler
CAT = catalytic converter
CC = Crew Cab
CEL = check engine light
CP3 = Duramax High pressure injection pump
CTD = Cummins Turbo Diesel
DA or D/A = Duramax and Allison combination
DHRA = Diesel Hot Rod association
DRL = Daytime running lights
DRW = Dual rear wheels
DTC = Diagnostic Trouble code
Dyno = Dynamometer
EC = Extended Cab
ECM = Engine control module
ECT = Engine Coolan Temperature
EGR = Exhaust Gas Recirculation
EGT = Exhaust Gas Temperature
G80 = Gm's RPO code for the rear locking differential in our truck
GN = Goose neck
HD = Heavy Duty
HP = Horsepower or High pressure
IAT = Intake Air Temperature
IC = Intercooler
IP = Injection pump
J/A = Edge Juice and Attitude
LB = Long Box
LP = Lift Pump or Low pressure
MAP = Manifold Absolute Pressure sensor
MAF= Mass Airflow sensor
MIL = Malfunction Indicator Lamp/Light
N20 = Nitrous Oxide
NA = Naturally Aspirated, can also mean not applicable or not available
NOS = Manufacturer of Nitrous Oxide systems (quite often mistaking used to describe Nitrous Oxide)
NSBU = Neutral safety backup sensor.
OBDII = Standard for diagnostic codes
Odo = Odometer
OEM = Original Equipment Manufacturer
PCV = Postive Crankcase Ventilation
PS = Power stroke or Power steering
PSD = Power stroke Diesel
PTO = Power take off
PYO = GM's RPO code for the aluminum wheels found on our trucks
QC = Quad Cab
RC = Regular Cab
RPO = Regular Production Options
RS = Remote start
RT = Reaction time
SB = Short Box
SES (light) = Service Engine Soon (light)
SRW = Single rear wheels
SS = Stainless steel
TC = Torque converter
TCM = Transmission control module
TIT = Turbine Inlet Temperature
Tech II = GM's tool used to test, diagnose and reprogram the various computers in our truck
TQ = Torque
VIN = Vehicle Identification Number or Serial number
VSS = Vehicle speed sensor
WG = Waste Gate
WIF = Water in Fuel
WOT = Wide open throttle
DLC = Data Link Connector also sometimes called ALDL
PMD/FSD = same device Pump Mounted Driver (when installed on IP) or Fuel Solenoid Driver (when removed from IP) electronic device controls operation of fuel solenoid.
IP = Injection Pump
LP = low pressure or lift pump depending on users context
HP = high pressure, also can be Hp=horsepower depending on contex
6.5 LTD = 6.5 litre turbo diesel 6.5L= approx 396 CID cubic inch displacement
CDR= crankcase depression regulator "tuna can" controls crankcase pressure vents to turbo inlet
EGR= Exhaust gas regulation valve on emission engines center rear of inlet
L56= "emissions engine" usually at 1/2 T truck or some LD frame 3/4Ts (S engine 8th VIN digit code)
L65= non emission HD truck engine (F engine 8th VIN digit code)
LD/HD= light or heavy duty frame, HD frame and suspension a little "beefier" weigh more, heavier tow/load capacity. Check RPO codes HD is usually L65 code
RPO= regular production options ??? list inbyour glove box of options your truck was delivered with
CAT= catalytic converter slang generally L56 trucks have this
WG= waste gate, flapper in turbos outlet that aids in spool up of turbo to reduce lag time until turbo camn make efficient boost
PCM= powertrain control module brain/computer that runs it all.
OPS= oil pressure switch
WIF= water in fuel
SES= service engine soon/check engine in GM manual this is MIL malfunction indicator lite
APP= accellerator pedal position, electronic module on go pedal that talks to the PCM for more or less fuel from the IP
OBD I or II= on board diagnostic generation I or II, in 1996 Congress mandated all US mfg use common diagnostic port and naming conventions OBDII trucks have electronic IP and require scan tool to read codes and perform diagnostic tests.
MAP= manifold absolute pressure mounted on upper intake gives Boost pressure input to PCM in OBD II L65 also provides baro conditions to PCM at start up,
Baro= barometric sensor in OBDI trucks mounted on firewall provides baro input to PCM, in L56 OBD II it also serves as the EGR feedback mechanism, not used in L65 OBDII which gets its baro from MAP (see MAP), both look the same but are keyed to only accept correct harness connection, have to make sure you get the correct sensor.
MAF= mass air flow flow sensor used in L56 to tell PCM how much flow in turbo inlet used to help calculate proper EGR flow
VSS= vehicle speed sensor
IAT= inlet air temp gives input to PCM how hot post turbo air is
ECT= engine coolant temp
IC= intercooler or aftercooler air to air heat exchanger that drops post turbo compressed air temp
WMI= water mist injection another way to cool turbo air using fine water mist
DTC= diagnostic trouble code
WGDC = waste gate duty cycle, The percentage of waste gate caluculated by the PCM that determines boost levels.
EGT = exhaust gas tempatures. When you turn your WGDC up you should watch your EGT's 1100-1200*F max. allowable tempatures.
EBP =exhaust back pressure is what turns the turbine.
TSM = Timing stepper motor. tsm advances the optical on the cam ring.
CTS = Coolant tempature sensor. It's in the way when you try to loosen the pump bolts
IIRC= If I Remember Correctly, which I sometimes don't so heavy emphasis on 1str word IF
General Chat acronyms:
BBIAB = Be back in a bit
BRB = Be right back
BTW = By the way
FOS = Full of S**t
FWIW = For what it's worth
IIRC = If I Recall Correctly
IMHO = In my honest opinion OR In my Honest opinion
IMO = In my opinion
JMO = Just my opinion
LMAO = Laughing my A$$ Off
LOL = Laughing out loud
N/A = Not applicable, not available can also mean naturally aspirated
NFG = No F'n good
POS = Piece of S**t
ROFLMAO = Rolling on the Floor laughing my A$$ off.
RTFM = Read the f***in manual
STFU = Shut the f*** up
TIA = Thanks in advance
TTYL = Talk to you later
TY = Thank you
YW = Your welcome
Truck Acronyms and abbreviations:
#1 = #1 Diesel Fuel (winter diesel fuel)
#2 = #2 Diesel Fuel
APP = Accelerator Pedal Position
BCM = Body control module. The module that controls various body related functions such as power windows, power locks, interior lights etc.
BOV = Blow off valve
CAC = Charge air cooler otherwise called Intercooler
CAT = catalytic converter
CC = Crew Cab
CEL = check engine light
CP3 = Duramax High pressure injection pump
CTD = Cummins Turbo Diesel
DA or D/A = Duramax and Allison combination
DHRA = Diesel Hot Rod association
DRL = Daytime running lights
DRW = Dual rear wheels
DTC = Diagnostic Trouble code
Dyno = Dynamometer
EC = Extended Cab
ECM = Engine control module
ECT = Engine Coolan Temperature
EGR = Exhaust Gas Recirculation
EGT = Exhaust Gas Temperature
G80 = Gm's RPO code for the rear locking differential in our truck
GN = Goose neck
HD = Heavy Duty
HP = Horsepower or High pressure
IAT = Intake Air Temperature
IC = Intercooler
IP = Injection pump
J/A = Edge Juice and Attitude
LB = Long Box
LP = Lift Pump or Low pressure
MAP = Manifold Absolute Pressure sensor
MAF= Mass Airflow sensor
MIL = Malfunction Indicator Lamp/Light
N20 = Nitrous Oxide
NA = Naturally Aspirated, can also mean not applicable or not available
NOS = Manufacturer of Nitrous Oxide systems (quite often mistaking used to describe Nitrous Oxide)
NSBU = Neutral safety backup sensor.
OBDII = Standard for diagnostic codes
Odo = Odometer
OEM = Original Equipment Manufacturer
PCV = Postive Crankcase Ventilation
PS = Power stroke or Power steering
PSD = Power stroke Diesel
PTO = Power take off
PYO = GM's RPO code for the aluminum wheels found on our trucks
QC = Quad Cab
RC = Regular Cab
RPO = Regular Production Options
RS = Remote start
RT = Reaction time
SB = Short Box
SES (light) = Service Engine Soon (light)
SRW = Single rear wheels
SS = Stainless steel
TC = Torque converter
TCM = Transmission control module
TIT = Turbine Inlet Temperature
Tech II = GM's tool used to test, diagnose and reprogram the various computers in our truck
TQ = Torque
VIN = Vehicle Identification Number or Serial number
VSS = Vehicle speed sensor
WG = Waste Gate
WIF = Water in Fuel
WOT = Wide open throttle
DLC = Data Link Connector also sometimes called ALDL
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