Caterpillar GM 4.3L, G6 LPG Engine Fuel System Service Manual Supplement
404 pages · Publication 99789-84122
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- Models
- GM 4.3L, G6
- Serial coverage
- AT87A-10231-up
- AT88A-10231-up
- AT89A-10231-up
- Manual type
- Service Manual Supplement
- Pages
- 404
- Publication
- 99789-84122
- Condition
- Brand new
What's inside
From the manual's own table of contents: 182 topics. See sample pages (PDF, 634 KB)
- GLOSSARY
- INTRODUCTION
- HOW TO IDENTIFY THE ENGINE YEAR
- SERVICING YOUR EMISSIONS CERTIFIED ENGINE
- FUEL QUALITY
- FUEL SYSTEM CAUTIONS
- WARNINGS, CAUTIONS AND NOTES
- PROPER USE OF THIS SERVICE MANUAL, TOOLS AND EQUIPMENT
- SERPENTINE BELT SYSTEM
- COOLING SYSTEM
- COOLANT
- ENGINE ELECTRICAL SYSTEM MAINTENANCE
- ENGINE CRANKCASE OIL
- FUEL SYSTEM INSPECTION AND MAINTENANCE
- ELECTRONIC PRESSURE REGULATOR (EPR) MAINTENANCE AND INSPECTION
- AIR FUEL MIXER/THROTTLE CONTROL DEVICE MAINTENANCE AND INSPECTION
- EXHAUST SYSTEM AND CATALYTIC CONVERTER INSPECTION AND MAINTENANCE
- DESCRIPTION AND OPERATION OF THE FUEL SYSTEMS
- FUEL SYSTEM DESCRIPTION
- DIAGNOSTIC AIDS
- LPG SYMPTOM DIAGNOSTICS
- INTERMITTENT
- NO START
- HARD START
Show all 182 topics
- CUTS OUT, MISSES
- HESITATION, SAG, STUMBLE
- BACKFIRE
- LACK OF POWER, SLUGGISHNESS, OR SPONGINESS
- POOR FUEL ECONOMY
- ROUGH, UNSTABLE, OR INCORRECT IDLE, STALLING
- SURGES/CHUGGLES
- CRANKCASE VENTILATION SYSTEM INSPECTION/DIAGNOSIS RESULTS OF INCORRECT OPERATION
- DST INSTALLATION INSTRUCTIONS
- INSTALLING THE USB ADAPTER DRIVER
- PASSWORD LOGIN
- PASSWORD DIALOG BOX FUNCTIONS
- CONNECTING THE PC TO THE SPECTRUM FUEL SYSTEM
- DST SERVICE PAGES
- SPARK KILL
- INJECTOR KILL
- DBW TEST MODE
- EXTERNAL POWER TEST
- PLOT/LOG MENU FUNCTIONS
- DST PLOT INTERFACE FUNCTIONS
- SNAPSHOT HOT KEY FUNCTIONS
- DST LOGGER
- REPROGRAMMING THE ECM
- MALFUNCTION INDICATOR LAMP (MIL)
- SPECTRUM DIAGNOSTIC TROUBLE CODES (DTC)
- DLC COMMUNICATION ERROR
- BLINK CODE FUNCTION
- INTERMITTENT PROBLEMS
- CHASSIS SCHEMATIC
- ENGINE SCHEMATIC
- ELECTRICAL FLOW DIAGRAM
- ECM POWER, POWER RELAY CONTROLS & ECM GROUND CIRCUITS PAGE ECM-1
- ECM ENGINE / FUEL SENSOR CIRCUITS (1) PAGE ECM-2
- ECM ENGINE / FUEL SENSOR CIRCUITS (2) PAGE ECM-3
- ECM ACTUATOR CIRCUITS PAGE ECM-4
- ECM INTERFACE CONNECTOR CIRCUITS PAGE ECM-5
- ECM EPR AND DIAGNOSTIC CONNECTOR CIRCUITS PAGE ECM-6
- ON-VEHICLE SERVICE WIRE HARNESS REPAIR
- CONNECTORS AND TERMINALS
- MICRO-PACK
- METRI-PACK
- WEATHER-PACK
- OBD SYSTEM CHECK/MIL (MALFUNCTION INDICATOR LAMP)
- IGNITION CONTROL SYSTEM DIAGNOSTIC CHART
- DTC-16 — NEVER CRANK SYNCED AT START
- DTC-107 — MAP LOW VOLTAGE
- DTC-108 — MAP HIGH PRESSURE
- DTC-111 — IAT HIGHER THAN EXPECTED 1
- DTC-112 — IAT LOW VOLTAGE
- DTC-113 — IAT HIGH VOLTAGE
- DTC-117 — ECT/CHT LOW VOLTAGE
- DTC-118 — ECT/CHT HIGH VOLTAGE
- DTC-121 — TPS 1 LOWER THAN TPS 2
- DTC-122 — TPS 1 SIGNAL VOLTAGE LOW
- DTC-123 — TPS 1 SIGNAL VOLTAGE HIGH
- DTC-127 — IAT HIGHER THAN EXPECTED 2
- DTC-129 — BP LOW PRESSURE
- DTC-134 — EGO 1 PRE CAT OPEN/LAZY
- DTC-154 — EGO 2 POST CAT OPEN/LAZY
- DTC-187 — FT VOLTAGE LOW
- DTC-188 — FT VOLTAGE HIGH
- DTC-219 — MAX GOVERN SPEED OVERRIDE
- DTC-221 — TPS 1 HIGHER THAN TPS 2
- DTC-222 — TPS 2 SIGNAL VOLTAGE LOW
- DTC-223 — TPS 2 SIGNAL VOLTAGE HIGH
- DTC-336 — CRANK SYNC NOISE
- DTC-337 — CRANK LOSS
- DTC-341 — CAMSHAFT SYNC NOISE
- DTC-342 — CAMSHAFT SENSOR LOSS
- DTC-359 — FUEL RUN-OUT LONGER THAN EXPECTED
- DTC-524 — OIL PRESSURE LOW
- DTC-562 — SYSTEM VOLTAGE LOW
- DTC-563 — SYSTEM VOLTAGE HIGH
- DTC-601 — FLASH CHECKSUM INVALID
- DTC-604 — RAM FAILURE
- DTC-606 — COP FAILURE
- DTC-642 — EXTERNAL 5 VOLT REFERENCE LOW
- DTC-643 — EXTERNAL 5 VOLT REFERENCE HIGH
- DTC-650 — MIL CONTROL OPEN
- DTC-652 — EXTERNAL 5 VOLT 2 REFERENCE LOW
- DTC-653 — EXTERNAL 5 VOLT 2 REFERENCE HIGH
- DTC-685 — RELAY COIL OPEN
- DTC-686 — RELAY CONTROL GROUND SHORT
- DTC-687 — RELAY COIL SHORT TO POWER
- DTC-1111 — FUEL REV LIMIT
- DTC-1112 — SPARK REV LIMIT
- DTC-1121 — FPP 1 AND 2 REDUNDANCY LOST
- DTC-1151 — CLOSED LOOP MULTIPLIER HIGH LPG
- DTC-1152 — CLOSED LOOP MULTIPLIER LOW LPG
- DTC-1161 — ADAPTIVE LEARN HIGH LPG
- DTC-1162 — ADAPTIVE LEARN LOW LPG
- DTC-1171 — EPR PRESSURE HIGHER THAN EXPECTED
- DTC-1172 — EPR PRESSURE LOWER THAN EXPECTED
- DTC-1173 — EPR COMMUNICATION LOST
- DTC-1174 — EPR SUPPLY VOLTAGE HIGH
- DTC-1175 — EPR SUPPLY VOLTAGE LOW
- DTC-1176 — EPR INTERNAL ACTUATOR FAULT
- DTC-1177 — EPR INTERNAL CIRCUITRY FAULT
- DTC-1178 — EPR INTERNAL COMMUNICATION ERROR
- DTC-1511 — AUX ANALOG PU1 HIGH
- DTC-1512 — AUX ANALOG PU1 LOW
- DTC-1521 — CHT HIGHER THAN EXPECTED 1
- DTC-1522 — CHT HIGHER THAN EXPECTED 2
- DTC-1616 — INVALID INTERRUPT
- DTC-1626 — CAN TX FAILURE
- DTC-1627 — CAN RX FAILURE
- DTC-1628 — CAN ADDRESS CONFLICT
- DTC-1645 — MIL CONTROL GROUND SHORT TO POWER
- DTC-2111 — UNABLE TO REACH LOWER TPS
- DTC-2112 — UNABLE TO REACH HIGHER TPS
- DTC-2122 — FPP 1 HIGH VOLTAGE
- DTC-2123 — FPP 1 LOW VOLTAGE
- DTC-2126 — FPP 1 HIGHER THAN FPP 2
- DTC-2127 — FPP 2 LOW VOLTAGE
- DTC-2128 — FPP 2 HIGH VOLTAGE
- DTC-2229 — BP HIGH PRESSURE
- DTC-2300 — PRIMARY LOOP OPEN/LOW SIDE SHORT TO GROUND
- DTC-2301 — PRIMARY COIL SHORTED
- ENGINE CONTROL MODULE
- ENGINE WIRE HARNESS REPLACEMENT
- FUEL TEMPERATURE (FT) SENSOR REPLACEMENT
- OIL PRESSURE SENDER
- DISTRIBUTOR
- TEMPERATURE MANIFOLD PRESSURE SENSOR (TMAP)
- FT150 FUEL MIXER
- VACUUM LINE
- ENGINE COOLANT TEMPERATURE SENSOR (ECT)
- HEATED EXHAUST GAS OXYGEN SENSOR (HEGO)
- PROPANE FUEL SYSTEM PRESSURE RELIEF
- FUEL MIXER
- ELECTRONIC PRESSURE REGULATOR (EPR)
- ELECTRONIC PRESSURE REGULATOR (EPR)—SERVICE
- MIXER TO THROTTLE BODY O-RING REPLACEMENT
- MIXER TO THROTTLE PLASTIC THROTTLE BODY SLEEVE REPLACEMENT
- THROTTLE BODY REPLACEMENT
- THROTTLE BODY-ADAPTER O-RING REPLACEMENT
- REPLACEMENT OF ADAPTER-INTAKE MANIFOLD GASKETS
- FUEL VAPOR HOSE—(EPR) TO FUEL MIXER
- SHUT-OFF VALVE REPLACEMENT
- EPR MOUNTING BRACKET
- ECM MOUNTING BRACKET
- LPG FUEL SYSTEM PRESSURE CHECK
- LPG FUEL CONTROL SYSTEM CHECK
- PROPANE FUEL SYSTEM LEAK TEST
- RESTRICTED EXHAUST SYSTEM DIAGNOSIS
- CATALYTIC CONVERTER
- EPR COOLANT HOSE REPLACEMENT
- MIXER AND THROTTLE BODY ASSEMBLY (NEW)
- MIXER AND THROTTLE BODY ASSEMBLY (FORMER)
- EPR ASSEMBLY
- REGULATOR REPAIR
- HOSE ASSEMBLIES COOLANT/VACUUM/FUEL
- SENSORS
- EXHAUST SYSTEM
- SERVICE TOOLS
- ALTITUDE VS. BAROMETRIC PRESSURE
- IGNITION SYSTEM SPECIFICATIONS
- EXTENDED ECT TEMPERATURE VS. RESISTANCE
Inside this manual
Real pages from this service manual supplement (404 pages). Open the sample pages (PDF, 632 KB)
- Troubleshooting, page 55: 5 — LPG SYMPTOM DIAGNOSTICS
- Specifications, page 85: 6 — DIAGNOSTIC SCAN TOOL
- Diagram, page 103: Electrical System Schematic
- Color page, page 75: 6 — DIAGNOSTIC SCAN TOOL
- Color page, page 92: 6 — DIAGNOSTIC SCAN TOOL
- Foldout diagram, page 102: Used for
This is a service manual
Here's how it compares to the other manual types.
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 404 pages
Quantity one is the manual described above.
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Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).