1998 DODGE RAM 1500 open gas tank

INSTALLATION
CAUTION: Whenever the fuel tank module is ser-
viced, the rubber gasket must be replaced.
(1) Thoroughly clean locknut and locknut threads
at top of tank.(2) Using new gasket, carefully position fuel tank
module into opening in fuel tank.
(3) Position locknut over top of fuel tank module.
Install locknut finger tight.
(4) When looking down at tank from drivers side of
tank, the fuel line connectors and fuel gauge electri-
cal connector should all be pointed to drivers side of
vehicle. Rotate and align if necessary before tighten-
ing locknut.This step must be performed to pre-
vent the module's float from contacting side of
fuel tank.
(5) Tighten locknut to 24 - 44 N´m (18 - 32 ft. lbs.)
torque.
(6) Install fuel tank. Refer to Fuel Tank Removal/
Installation.
FUEL TRANSFER PUMP
DESCRIPTION
The fuel transfer pump (fuel lift pump) is attached
to the rear of the fuel filter/water separator housing.
The 12±volt electric pump is operated and controlled
by the Engine Control Module (ECM).
OPERATION
The purpose of the fuel transfer pump is to supply
(transfer) a low-pressure fuel source:fromthe fuel
tank,throughthe fuel filter/water separator andto
the fuel injection pump. Here, the low-pressure is
raised to a high-pressure by the fuel injection pump
for operation of the high-pressure fuel injectors.
Check valves within the pump, control direction of
fuel flow and prevent fuel bleed-back during engine
shut down.
Maximum current flow to the pump is 5 amperes.
With the engine running, the pump has a 100 per-
cent duty-cycle.
The transfer pump is self-priming: When the key is
first turned on (without cranking engine), the pump
will operate for approximately 2 seconds and then
shut off. The pump will also operate for up to 25 sec-
onds after the starter is engaged, and then disen-
gaged and the engine is not running. The pump
shuts off immediately if the key is on and the engine
stops running.
The fuel volume of the transfer pump will always
provide more fuel than the fuel injection pump
requires. Excess fuel is returned from the injection
pump through an overflow valve, and then back to
the fuel tank.
REMOVAL
The fuel transfer pump (fuel lift pump) is attached
to the rear of the fuel filter/water separator housing
(Fig. 23).
Fig. 21 FUEL TANK MODULE - DIESEL
1 - TOP OF FUEL TANK
2 - AUX. FITTING
3 - ELEC. CONNECTOR
4 - FUEL TANK MODULE (TOP)
5 - LOCKNUT
6 - FUEL SUPPLY LINE
7 - FUEL RETURN LINE
Fig. 22 LOCKNUT REMOVAL/INSTALLATION -
TYPICAL MODULE
1 - SPECIAL TOOL 6856
2 - LOCKNUT
14 - 64 FUEL DELIVERY - DIESELDR
FUEL TANK MODULE (Continued)

SUPPLEMENTAL RESTRAINTS -
STANDARD PROCEDURE, HANDLING
NON-DEPLOYED......................8O-6
SUPPLIES - DESCRIPTION, 5 VOLT......8E-10
SUPPLIES - OPERATION, 5 VOLT........8E-11
SUPPLY TEST - DIAGNOSIS AND
TESTING, VACUUM....................8P-2
SUPPORT - INSTALLATION, SUN VISOR . . . 23-71
SUPPORT - REMOVAL, SUN VISOR......23-70
SUPPORT BRACKET - INSTALLATION,
REAR VIEW MIRROR.................23-70
SUPPORT BRACKET - INSTALLATION,
STEERING COLUMN OPENING..........23-60
SUPPORT BRACKET - REMOVAL,
STEERING COLUMN OPENING..........23-60
SUPPORT CYLINDER - INSTALLATION....23-48
SUPPORT CYLINDER - INSTALLATION,
LOAD FLOOR........................23-72
SUPPORT CYLINDER - REMOVAL........23-48
SUPPORT CYLINDER - REMOVAL, LOAD
FLOOR.............................23-72
SUPPORT HANDLE/BEZEL -
INSTALLATION, LUMBAR..............23-82
SUPPORT HANDLE/BEZEL - REMOVAL,
LUMBAR...........................23-82
SUPPORT PLATE - INSTALLATION........5-36
SUPPORT PLATE - REMOVAL............5-35
SUPPRESSION GROUND STRAP -
DESCRIPTION, RADIO NOISE............8A-9
SUPPRESSION GROUND STRAP -
INSTALLATION, RADIO NOISE...........8A-10
SUPPRESSION GROUND STRAP -
OPERATION, RADIO NOISE..............8A-9
SUPPRESSION GROUND STRAP -
REMOVAL, RADIO NOISE...............8A-9
SURFACE PREPARATION - STANDARD
PROCEDURE, ENGINE GASKET...........9-10
SURROUND - INSTALLATION,
INSTRUMENT PANEL LOWER...........23-59
SURROUND - REMOVAL, INSTRUMENT
PANEL LOWER......................23-59
SUSPENSION - DESCRIPTION, GEAR -
INDEPENDENT FRONT.................19-17
SUSPENSION - INSTALLATION, GEAR -
INDEPENDENT FRONT.................19-18
SUSPENSION - REMOVAL, GEAR -
INDEPENDENT FRONT.................19-17
SUSPENSION - STANDARD PROCEDURE,
ALIGNMENT LINK/COIL..................2-5
SUSPENSION ARM - INSTALLATION,
LOWER.............................2-38
SUSPENSION ARM - REMOVAL, LOWER . . . 2-38
SUSPENSION, SPECIAL TOOLS - FRONT . . . 2-12
SWITCH - DESCRIPTION................8P-7
SWITCH - DESCRIPTION, BACKUP LAMP . . . 8L-8
SWITCH - DESCRIPTION, BLOWER
MOTOR............................24-20
SWITCH - DESCRIPTION, BRAKE LAMP....8L-9
SWITCH - DESCRIPTION, CLUTCH
PEDAL POSITION.....................6-13
SWITCH - DESCRIPTION, DOOR AJAR....8L-27
SWITCH - DESCRIPTION, DRIVER SEAT . . . 8N-14
SWITCH - DESCRIPTION, HAZARD.......8L-14
SWITCH - DESCRIPTION, HEADLAMP....8L-14
SWITCH - DESCRIPTION, HEATED SEAT . . 8G-11
SWITCH - DESCRIPTION, HORN
..........8H-2
SWITCH - DESCRIPTION, IGNITION
.......19-9
SWITCH - DESCRIPTION, KEY-IN
IGNITION
...........................19-11
SWITCH - DESCRIPTION, LUMBAR
CONTROL
..........................8N-17
SWITCH - DESCRIPTION, PASSENGER
AIRBAG ON/OFF
.....................8O-42
SWITCH - DESCRIPTION, PASSENGER
SEAT
..............................8N-15
SWITCH - DESCRIPTION, POWER
STEERING PRESSURE
.................19-46
SWITCH - DESCRIPTION, PTO
.....14-36,14-85
SWITCH - DESCRIPTION, REAR
WINDOW DEFOGGER
..................8G-4
SWITCH - DESCRIPTION, SEAT BELT
.....8O-51
SWITCH - DESCRIPTION, SELECTOR
....21-510,
21-539,21-574
SWITCH - DESCRIPTION, TOW/HAUL
OVERDRIVE
..................21-261,21-392
SWITCH - DESCRIPTION, WASHER
FLUID LEVEL
.........................8R-9SWITCH - DIAGNOSIS AND TESTING,
BACKUP LAMP.......................8L-8
SWITCH - DIAGNOSIS AND TESTING,
BLOWER MOTOR....................24-20
SWITCH - DIAGNOSIS AND TESTING,
BRAKE LAMP.......................8L-10
SWITCH - DIAGNOSIS AND TESTING,
CLUTCH PEDAL POSITION..............6-13
SWITCH - DIAGNOSIS AND TESTING,
DRIVER SEAT.......................8N-14
SWITCH - DIAGNOSIS AND TESTING,
HEATED SEAT .......................8G-12
SWITCH - DIAGNOSIS AND TESTING,
HORN..............................8H-2
SWITCH - DIAGNOSIS AND TESTING,
IGNITION............................19-9
SWITCH - DIAGNOSIS AND TESTING,
MULTI-FUNCTION....................8L-18
SWITCH - DIAGNOSIS AND TESTING,
PASSENGER SEAT....................8N-16
SWITCH - DIAGNOSIS AND TESTING,
POWER LOCK........................8N-4
SWITCH - DIAGNOSIS AND TESTING,
POWER MIRROR....................8N-12
SWITCH - DIAGNOSIS AND TESTING,
SEAT BELT .........................8O-51
SWITCH - DIAGNOSIS AND TESTING,
WINDOW...........................8N-20
SWITCH - INSTALLATION...............8P-8
SWITCH - INSTALLATION, ADJUSTABLE
PEDAL...............................5-6
SWITCH - INSTALLATION, BRAKE LAMP . . 8L-11
SWITCH - INSTALLATION, DRIVER SEAT . . . 8N-15
SWITCH - INSTALLATION, HEADLAMP....8L-15
SWITCH - INSTALLATION, HEATED SEAT . . 8G-13
SWITCH - INSTALLATION, IGNITION......19-11
SWITCH - INSTALLATION, MULTI-
FUNCTION..........................8L-19
SWITCH - INSTALLATION, OIL
PRESSURE.........................9-294
SWITCH - INSTALLATION, PASSENGER
AIRBAG ON/OFF.....................8O-44
SWITCH - INSTALLATION, PASSENGER
SEAT ..............................8N-16
SWITCH - INSTALLATION, POWER LOCK . . . 8N-4
SWITCH - INSTALLATION, TOW/HAUL
OVERDRIVE..................21-262,21-393
SWITCH - INSTALLATION, WASHER
FLUID LEVEL........................8R-11
SWITCH - INSTALLATION, WINDOW.....8N-21
SWITCH - OPERATION.................8P-7
SWITCH - OPERATION, BACKUP LAMP....8L-8
SWITCH - OPERATION, BLOWER MOTOR . . 24-20
SWITCH - OPERATION, BRAKE LAMP......8L-9
SWITCH - OPERATION, CLUTCH PEDAL
POSITION...........................6-13
SWITCH - OPERATION, DOOR AJAR......8L-27
SWITCH - OPERATION, DRIVER SEAT....8N-14
SWITCH - OPERATION, HAZARD.........8L-14
SWITCH - OPERATION, HEADLAMP......8L-14
SWITCH - OPERATION, HEATED SEAT....8G-12
SWITCH - OPERATION, IGNITION.........19-9
SWITCH - OPERATION, LUMBAR
CONTROL..........................8N-18
SWITCH - OPERATION, PASSENGER
AIRBAG ON/OFF.....................8O-43
SWITCH - OPERATION, PASSENGER
SEAT ..............................8N-15
SWITCH - OPERATION, POWER
STEERING PRESSURE.................19-46
SWITCH - OPERATION, PTO.......14-36,14-85
SWITCH - OPERATION, REAR WINDOW
DEFOGGER..........................8G-4
SWITCH - OPERATION, SEAT BELT.......8O-51
SWITCH - OPERATION, SELECTOR.....21-510,
21-540,21-574
SWITCH - OPERATION, TOW/HAUL
OVERDRIVE..................21-262,21-392
SWITCH - OPERATION, WASHER FLUID
LEVEL..............................8R-9
SWITCH - REMOVAL...................8P-8
SWITCH - REMOVAL, ADJUSTABLE
PEDAL...............................5-6
SWITCH - REMOVAL, BRAKE LAMP
......8L-10
SWITCH - REMOVAL, DRIVER SEAT
......8N-15
SWITCH - REMOVAL, HEADLAMP
........8L-14
SWITCH - REMOVAL, HEATED SEAT
......8G-13
SWITCH - REMOVAL, IGNITION
.........19-10SWITCH - REMOVAL, LUMBAR
CONTROL..........................8N-18
SWITCH - REMOVAL, MULTI-FUNCTION . . . 8L-19
SWITCH - REMOVAL, OIL PRESSURE.....9-294
SWITCH - REMOVAL, PASSENGER
AIRBAG ON/OFF.....................8O-43
SWITCH - REMOVAL, PASSENGER SEAT . . 8N-16
SWITCH - REMOVAL, POWER LOCK......8N-4
SWITCH - REMOVAL, POWER MIRROR . . . 8N-12
SWITCH - REMOVAL, TOW/HAUL
OVERDRIVE..................21-262,21-392
SWITCH - REMOVAL, WASHER FLUID
LEVEL.............................8R-10
SWITCH - REMOVAL, WINDOW.........8N-20
SWITCH AND KEY LOCK CYLINDER -
DIAGNOSIS AND TESTING, IGNITION.....19-11
SWITCH BEZEL - INSTALLATION,
INSTRUMENT PANEL HEADLAMP........23-56
SWITCH BEZEL - REMOVAL,
INSTRUMENT PANEL HEADLAMP........23-56
SWITCH OPERATING MODES,
STANDARD PROCEDURE -
CONFIGURING A NEW MODULE..........8Q-3
SWITCH VALVE - DESCRIPTION,
SOLENOID.........................21-398
SWITCH VALVE - OPERATION, SOLENOID . 21-398
SWITCHES - DESCRIPTION, REMOTE.....8A-10
SWITCHES - DIAGNOSIS AND TESTING,
REMOTE...........................8A-11
SWITCHES - INSTALLATION, REMOTE....8A-12
SWITCHES - OPERATION, REMOTE........8A-11
SWITCHES - REMOVAL, REMOTE........8A-12
SYMBOLS - DESCRIPTION,
INTERNATIONAL....................Intro.-5
TACHOMETER - DESCRIPTION..........8J-38
TACHOMETER - OPERATION............8J-38
TAILGATE - INSTALLATION.............23-17
TAILGATE - REMOVAL.................23-17
TAILGATE MARKER LAMP -
INSTALLATION.......................8L-18
TAILGATE MARKER LAMP - REMOVAL....8L-18
TAILPIPE - 5.9L DIESEL - INSPECTION....11-10
TAILPIPE - 5.9L DIESEL - INSTALLATION . . 11-11
TAILPIPE - 5.9L DIESEL - REMOVAL.....11-10
TAILPIPE - INSPECTION...............11-11
TAILPIPE - INSTALLATION..............11-11
TAILPIPE - REMOVAL.................11-11
TANK - DESCRIPTION, FUEL............14-17
TANK - OPERATION, FUEL..............14-17
TANK MODULE - DESCRIPTION, FUEL....14-63
TANK MODULE - INSTALLATION, FUEL....14-64
TANK MODULE - OPERATION, FUEL......14-63
TANK MODULE - REMOVAL, FUEL.......14-63
TAPPETS - DIAGNOSIS AND TESTING,
HYDRAULIC.........................9-210
TAPPETS - INSTALLATION, HYDRAULIC . . . 9-211
TAPPETS - REMOVAL, HYDRAULIC.......9-211
TASK MANAGER - DESCRIPTION.........25-1
TASK MANAGER - OPERATION...........25-5
TCM QUICK LEARN - STANDARD
PROCEDURE........................8E-23
TEMP INDICATOR - DESCRIPTION,
TRANS.............................8J-40
TEMP INDICATOR - OPERATION, TRANS
. . 8J-40
TEMP SENSOR - DESCRIPTION,
AMBIENT
..........................8M-10
TEMP SENSOR - OPERATION, AMBIENT
. . 8M-10
TEMPERATURE GAUGE - DESCRIPTION,
ENGINE
............................8J-24
TEMPERATURE GAUGE - OPERATION,
ENGINE
............................8J-24
TEMPERATURE SENSOR - DESCRIPTION,
BATTERY
...........................8F-21
TEMPERATURE SENSOR - DESCRIPTION,
ENGINE COOLANT
.....................7-38
TEMPERATURE SENSOR - DESCRIPTION,
EVAPORATOR
.......................24-22
TEMPERATURE SENSOR - DESCRIPTION,
INTAKE AIR
.........................14-30
TEMPERATURE SENSOR - DESCRIPTION,
TRANSMISSION
...............21-267,21-408
TEMPERATURE SENSOR - DIAGNOSIS
AND TESTING, AMBIENT
..............8M-10
TEMPERATURE SENSOR -
INSTALLATION, BATTERY
..............8F-21
TEMPERATURE SENSOR -
INSTALLATION, ENGINE COOLANT
........7-41
32 INDEXDR
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