4WD DODGE RAM 1500 1998 2.G Owner's Manual

8W-91 CONNECTOR/GROUND/SPLICE LOCATION
TABLE OF CONTENTS
page
CONNECTOR/GROUND/SPLICE LOCATION
DESCRIPTION..........................1
CONNECTOR/GROUND/SPLICE
LOCATION
DESCRIPTION
This section provides illustrations identifying con-
nector, ground, and splice locations in the vehicle.
Connector, ground, and splice indexes are provided.Use the wiring diagrams in each section for connec-
tor, ground, and splice identification. Refer to the
index for the proper figure number. For items that
are not shown in this section N/S is placed in the
Fig. column.
CONNECTORS
CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
4WD Switch (Manual Transfer
Case)BK Near T/O for Backup Lamp Switch 16, 17, 19
A/C Compressor Clutch BK At A/C Compressor 3, 6, 7, 10
A/C Pressure Transducer BK Left Side of A/C Compressor 6, 7, 10
A/C-Heater Control C1 BK Center of Instrument Panel 34, 35, 36
A/C-Heater Control C2 BK Center of Instrument Panel 34, 35
Accelerator Pedal Position Sensor Under Battery Tray 22, 27
Adjustable Pedal Motor WT Left of Instrument Panel 31
Adjustable Pedal Switch BL Left of Instrument Panel 35, 38
Airbag Control Module C1 YL Lower Center of Instrument Panel 35, 36
Airbag Control Module C2 YL Lower Center of Instrument Panel 44, 46
Airbag Control Module-Left Side
ImpactYL Left B-Pillar 44, 46
Airbag Control Module-Right Side
ImpactYL Right B-Pillar 45, 47
Airbag-Driver Squib 1 YL On Steering Wheel N/S
Airbag-Left Curtain YL Top Left B-Pillar 44, 46
Airbag-Passenger YL Right Front of Instrument Panel 35, 39
Airbag-Right Curtain YL Top Right B-Pillar 45, 47
Ambient Temperature Sensor BK Left Rear of Hood 23, 29
Amplifier Audio C1 GY Top Center of Instrument Panel 35, 39
Amplifier Audio C2 GY Top Center of Instrument Panel 35, 39
Ashtray Lamp Center Stack 35
Automatic Day/Night Mirror (Except
Base)BK Top Center of Windshield N/S
Backup Lamp Switch BK Left Rear of Transmission 12, 13, 17, 19
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 1

FRONT MOUNT
REMOVAL
2WD
(1) Disconnect the negative cable from the battery.
CAUTION: Remove the viscous fan before raising
engine. Failure to do so may cause damage to the
fan blade, fan clutch and fan shroud.
(2) Remove the viscous fan (Refer to 7 - COOL-
ING/ENGINE/FAN DRIVE VISCOUS CLUTCH -
REMOVAL).
(3) Raise the vehicle.
(4) Remove the engine oil filter.
(5) Remove the oil drain trough.
(6)
Support the engine with a suitable jack and a
block of wood across the full width of the engine oil pan.
(7) Support the front axle with a suitable jack.
(8) Remove the (4) bolts that attach the engine
mounts to the front axle.
(9) Remove the (3) bolts that attach the front axle
to the left engine bracket.
(10) Lower the front axle.
(11) Remove the through bolts(12) Raise the engine far enough to be able to
remove the left and right engine mounts.
(13) Remove the (8) mount to engine attaching
bolts
(14) Remove the engine mounts.
4WD
(1) Disconnect the negative cable from the battery.
CAUTION: Remove the viscous fan before raising
engine. Failure to do so may cause damage to the
fan blade, fan clutch and fan shroud.
(2) Remove the viscous fan (Refer to 7 - COOL-
ING/ENGINE/FAN DRIVE VISCOUS CLUTCH -
REMOVAL).
(3) Raise the vehicle.
(4) Remove the skid plate.
(5) Remove the front crossmember.
(6) Remove the engine oil filter.
(7) Remove the oil drain trough.
(8) Support the engine with a suitable jack and a
block of wood across the full width of the engine oil
pan.
(9) Support the front axle with a suitable jack.
(10) Remove the (4) bolts that attach the engine
mounts to the front axle (Fig. 66).
Fig. 66 ENGINE INSULATOR MOUNTS 4X4
1 - RH INSULATOR TO AXLE BOLT
2 - NUT
3 - PINION SUPPORT MOUNT
4 - LH INSULATOR MOUNT5 - LH INSULATOR TO AXLE BOLT
6 - FRONT AXLE
7 - NUT
8 - RH INSULATOR MOUNT
9 - 58 ENGINE - 3.7LDR

(11) Remove the (3) bolts that attach the front axle
to the left engine bracket.
(12) Lower the front axle.
(13) Remove the (6) through bolts
(14) Raise the engine far enough to be able to
remove the left (Fig. 67) and right (Fig. 68) engine
mounts.
(15) Remove the engine mounts.
INSTALLATION
2WD
NOTE: For mount to engine block and left engine
bracket to front axle bolts, apply MoparTLock and
Seal Adhesive, Medium Strength Threadlocker.
(1) Install the right and left side engine mounts to
the engine block with (8) bolts. Torque bolts to 54
N´m (40 ft. lbs.).
(2) Insert the (2) through bolts into the right and
left side engine mounts and loose assemble the two
nuts onto the through bolts.
(3) Lower the engine until the through bolts rest
onto the slots in the frame brackets.(4) Tighten the through bolt nuts to 94 N´m (70 ft.
lbs.).
(5) Install the oil drain trough.
(6) Install the engine oil filter.
(7) Lower the vehicle.
(8) Install the viscous fan (Refer to 7 - COOLING/
ENGINE/FAN DRIVE VISCOUS CLUTCH -
REMOVAL).
(9) Reconnect the negative battery cable.
4WD
NOTE: For mount to engine block and left engine
bracket to front axle bolts, apply MoparTLock and
Seal Adhesive, Medium Strength Threadlocker.
(1) Install the right and left side engine mounts to
the front axle. Torque nuts to 94 N´m (70 ft. lbs.).
(2) Raise the front axle into the frame and install
the left and right side through bolts. Torque nuts to
94 N´m (70 ft. lbs.).
(3) Insert the two upper through bolts into the
right and left side engine mounts and loose assemble
the two nuts onto the through bolts.
(4) Lower the engine until the left and right side
engine brackets rest on the through bolts, and the
lower engine bracket through holes align with the
engine mounts, and the left engine bracket holes
align with the front axle slots (Fig. 69).
(5) Loose assemble the (3) bolts that attach the
front axle to the left engine bracket.
Fig. 67 ENGINE MOUNT SUPPORT BRACKET
1 - BOLT
2 - ENGINE MOUNT SUPPORT BRACKET
3 - BOLT
Fig. 68 ENGINE MOUNT SUPPORT BRACKET RH
1 - BOLT
2 - ENGINE MOUNT SUPPORT BRACKET
DRENGINE - 3.7L 9 - 59
FRONT MOUNT (Continued)

CAUTION: The structural cover must be held tightly
against both the engine and the transmission bell
housing during tightening sequence. Failure to do
so may cause damage to the cover.
(4) Starting with the two rear cover-to-engine
bolts, tighten bolts (1) (Fig. 86) to 54 N´m (40 ft. lbs.),
then tighten bolts (2) (Fig. 86) and (3) to 54 N´m ( 40
ft. lbs.) in the sequence shown.
(5) Install the exhaust pipe on left hand exhaust
manifold.
(6) Tighten exhaust manifold-to-exhaust pipe
retaining bolts to 20±26 N´m (15±20 ft. lbs.).
FRONT MOUNT
REMOVAL
2WD
(1) Disconnect the negative cable from the battery.
CAUTION: Remove the viscous fan before raising
engine. Failure to do so may cause damage to the
fan blade, fan clutch and fan shroud.(2) Remove the viscous fan (Refer to 7 - COOL-
ING/ENGINE/FAN DRIVE VISCOUS CLUTCH -
REMOVAL).
(3) Raise the vehicle.
(4) Remove the engine oil filter.
(5) Remove the oil drain trough.
(6) Support the engine with a suitable jack and a
block of wood across the full width of the engine oil
pan.
(7) Support the front axle with a suitable jack.
(8) Remove the (4) bolts that attach the engine
mounts to the front axle.
(9) Remove the (3) bolts that attach the front axle
to the left engine bracket.
(10) Lower the front axle.
(11) Remove the through bolts
(12) Raise the engine far enough to be able to
remove the left and right engine mounts.
(13) Remove the (8) mount to engine attaching
bolts
(14) Remove the engine mounts.
4WD
(1) Disconnect the negative cable from the battery.
(2) Remove the viscous fan.
(3) Raise the vehicle.
(4) Remove the skid plate.
(5) Remove the front crossmember.
(6) Remove the engine oil filter.
(7) Remove the oil drain trough.
(8) Support the engine with a suitable jack and a
block of wood across the full width of the engine oil
pan.
(9) Support the front axle with a suitable jack.
(10) Remove the (4) bolts that attach the engine
mounts to the front axle (Fig. 87).
(11) Remove the (3) bolts that attach the front axle
to the left engine bracket.
(12) Lower the front axle.
(13) Remove the (6) through bolts
Fig. 86 Structural Cover
1 - BOLT
2 - BOLT
3 - BOLT
9 - 146 ENGINE - 4.7LDR
STRUCTURAL COVER (Continued)

(7) Lower the vehicle.
(8) Install the viscous fan (Refer to 7 - COOLING/
ENGINE/FAN DRIVE VISCOUS CLUTCH -
REMOVAL).
(9) Reconnect the negative battery cable.
4WD
NOTE: For mount to engine block and left engine
bracket to front axle bolts, apply MoparTLock and
Seal Adhesive, Medium Strength Threadlocker.
(1) Install the right and left side engine mounts to
the front axle. Torque nuts to 94 N´m (70 ft. lbs.).
(2) Raise the front axle into the frame and install
the left and right side through bolts. Torque nuts to
94 N´m (70 ft. lbs.).
(3) Insert the two upper through bolts into the
right and left side engine mounts and loose assemble
the two nuts onto the through bolts.
(4) Lower the engine until the left and right side
engine brackets rest on the through bolts, and the
lower engine bracket through holes align with the
engine mounts, and the left engine bracket holes
align with the front axle slots (Fig. 90).
(5) Loose assemble the (3) bolts that attach the
front axle to the left engine bracket.
(6) Loose assemble the lower through bolts.
Fig. 89 ENGINE MOUNT SUPPORT BRACKET
1 - BOLT
2 - ENGINE MOUNT SUPPORT BRACKET
3 - BOLT
Fig. 90 ENGINE INSULATOR MOUNTS 4X4
1 - RH INSULATOR TO AXLE BOLT
2 - NUT
3 - PINION SUPPORT MOUNT
4 - LH INSULATOR MOUNT5 - LH INSULATOR TO AXLE BOLT
6 - FRONT AXLE
7 - NUT
8 - RH INSULATOR MOUNT
9 - 148 ENGINE - 4.7LDR
FRONT MOUNT (Continued)

VALVE SPRING
DESCRIPTION SPECIFICATION
Spring Force (Valve
Closed)
Intake and Exhaust 422.0 N @ 46.0 mm
(95lbs. @ 1.81 in.)
Spring Force (Valve
Open)
Intake and Exhaust @ 33.5 mm
Number of Coils
Intake and Exhaust 7.4
Wire Diameter
Intake and Exhaust 5.39 ý 4.52 mm
(0.212 - 0.177 in.)
Installed Height (Spring
Seat to Bottom of
Retainer)
Intake and Exhaust 46.0 mm (1.81 in.)
OIL PUMP
DESCRIPTION SPECIFICATION
Clearance Over Rotors
(MAX)0.095 mm (0.0038 in.)
Outer Rotor to Pump
Body Clearance (MAX).235 mm (.009 in.)
Tip Clearance Between
Rotors (MAX)0.150 mm (0.006 in.)
OIL PRESSURE
SPECIFICATION SPECIFICATION
At Curb Idle Speed
(MIN)*25 kPa (4 psi)
@ 3000 rpm 170 - 758 kPa (25 - 110
psi)
* CAUTION: If pressure is zero at curb idle, DO
NOT run engine
TORQUE
TORQUE CHART 5.7L ENGINE
DESCRIPTION N´m Ft. In.
Lbs. Lbs.
Block Pipe Plugs
(1/4 NPT)20 Ð 177
(3/8 NPT) 27 Ð 240
Camshaft SprocketÐBolt 122 90 Ð
Camshaft Tensioner
PlateÐBolts28 Ð 250
Timing Chain Case CoverÐ
Bolts28 Ð 250
Lifting Stud 55 40 Ð
Connecting Rod CapÐBolts 21
plus
90É
Turn15
plus
90É
TurnÐ
Main Bearing CapÐBolts
M-1227
plus
90É
TurnÐÐ
Crossbolts
M-828 Ð Ð
Cylinder HeadÐBolts
M-12 Bolts
Step 1 34 25 Ð
Step 2 54 40 Ð
Step 3 Turn
90ÉTurn
90ÉÐ
M-8 Bolts Ð
Step 1 20 15 Ð
Step 2 34 25 Ð
Cylinder Head CoverÐBolts 8 Ð 70
Exhaust Manifold to Cylinder
Head25 Ð 220
Flexplate to crankshaftÐBolts 95 70 Ð
Flywheel to crankshaftÐBolts 75 55 Ð
Front InsulatorÐThrough
bolt/nut95 70 Ð
Front Insulator to Support
Bracket
ÐStud Nut (4WD) 41 30 Ð
ÐThrough Bolt/Nut (4WD) 102 75 Ð
Front Insulator to BlockÐ
Bolts (2WD)95 70 Ð
DRENGINE - 5.7L 9 - 195
ENGINE - 5.7L (Continued)

DESCRIPTION N´m Ft. In.
Lbs. Lbs.
GeneratorÐMounting Bolt 55 40 Ð
Intake ManifoldÐBolts Refer to Procedure
Lifter Guide Holder 12 Ð 106
Oil Pan Bolts 12 - 105
Oil Dipstick Tube 12 Ð 105
Oil PanÐDrain Plug 34 25 Ð
Oil PumpÐAttaching Bolts 28 Ð 250
Oil Pump Pickup Tube ± Bolt
and Nut28 Ð 250
Rear Seal Retainer Attaching
Bolts15 Ð 132
Rear Insulator to BracketÐ 68 50 Ð
Through-Bolt (2WD)
Rear Insulator to
Crossmember41 30 Ð
Support BracketÐNut (2WD)
Rear Insulator to
CrossmemberÐ68 50 Ð
Nuts (4WD)
Rear Insulator to
TransmissionÐ68 50 Ð
Bolts (4WD)
Rear Insulator BracketÐBolts 68 50 Ð
(4WD Automatic)
Rear Support Bracket to 41 30 Ð
Crossmember FlangeÐNuts
Rear Support Plate to
Transfer41 30 Ð
CaseÐBolts
Rocker ArmÐBolts 22 Ð 195
Spark Plugs Ð Ð Ð
Thermostat HousingÐBolts 28 Ð 250
Throttle BodyÐBolts 12 Ð 105
Transfer Case to Insulator 204 105 Ð
Mounting PlateÐNuts
Transmission Support
BracketÐ68 50 Ð
Bolts (2WD)
Vibration DamperÐBolt 176 129 Ð
Water Pump to Timing Chain 28 Ð 250
Case CoverÐBoltsSPECIAL TOOLS
5.7L ENGINE
CRANKSHAFT DAMPER REMOVER INSERT - 8513-A
Bloc±Chek±Kit C-3685±A
Bore Size Indicator C-119
Puller 8454
Crankshaft Damper Installer 8512
9 - 196 ENGINE - 5.7LDR
ENGINE - 5.7L (Continued)

CAUTION: The structural cover must be held tightly
against the corner formed by the engine and the
transmission clutch housing during tightening
sequence. Failure to do so may cause damage to
the cover and engine noise.
(4) Torque the (2)structural dust cover bolts that
go into the clutch housing to 6-11 N´m (50-100
in.lbs.).
(5) Torque the (4) structural dust cover bolts that
go into the engine block to 6-11 N´m (50-100 in.lbs.).
(6) Torque the structural cover bolt that is closest
to the rear face of block on the passenger side of
block to 54 N´m (40 ft. lbs.).
(7) Torque the structural cover bolt that is closest
to the front face of block on the drivers side to 54
N´m (40 ft. lbs.).(8) Torque the remaining (2) structural cover bolts
that go into theblockin an ªXº pattern to 54 N´m
(40 ft. lbs.).
(9) Torque the structural cover bolts that go into
theclutch housingto 54 N´m (40 ft. lbs.).
(10) Torque the 7/16 inch engine block to clutch
housing bolts to 68 N´m (50 ft. lbs.).
FRONT MOUNT
REMOVAL
2WD
(1) Disconnect negative battery cable.
(2) Raise vehicle.
(3) Remove engine mount through bolts.
(4) Raise engine using engine support fixture spe-
cial tool # 8534.
(5) Remove engine mount to insulator bolts (Fig.
21), (Fig. 22).
(6) Remove insulator from engine.
4WD
(1) Disconnect the negative cable from the battery.
(2) Raise the vehicle.
(3) Remove the skid plate.
(4) Remove the front crossmember(Refer to 13 -
FRAME & BUMPERS/FRAME/FRONT CROSS-
MEMBER - REMOVAL).
(5) Remove the engine oil filter.Fig. 20 Structural Cover - Manual Transmission
1 - STRUCTURAL COVER
2 - BOLT
3 - BOLT
4 - BOLT
5 - BOLT
6 - BOLT
7 - BOLT
Fig. 21 RH INSULATOR
1 - BOLT
2 - INSULATOR
DRENGINE - 5.7L 9 - 217
STRUCTURAL COVER (Continued)

(4) Install mount through bolts.
(5) Tighten through bolts on both sides to 61 N´m
(45 ft. lbs.).
(6) Lower vehicle.(7) Connect negative battery cable.
4WD
NOTE: For mount to engine block and left engine
bracket to front axle bolts, apply MoparTLock and
Seal Adhesive, Medium Strength Threadlocker.
(1) Install the right and left side engine mounts to
the front axle. Torque nuts to 94 N´m (70 ft. lbs.).
(2) Raise the front axle into the frame and install
the left and right side through bolts. Torque nuts to
94 N´m (70 ft. lbs.).
(3) Insert the two upper through bolts into the
right and left side engine mounts and loose assemble
the two nuts onto the through bolts.
(4) Lower the engine using engine support fixture
special tool # 8534, until the left and right side
engine brackets rest on the through bolts, and the
lower engine bracket through holes align with the
engine mounts, and the left engine bracket holes
align with the front axle slots (Fig. 25).
(5) Loose assemble the (3) bolts that attach the
front axle to the left engine bracket.
(6) Loose assemble the lower through bolts.
(7) Torque the nuts for the (4) through bolts to 101
N´m (75 ft. lbs.).
Fig. 24 RH INSULATOR
1 - BOLT
2 - INSULATOR
Fig. 25 ENGINE INSULATOR MOUNTS 4X4
1 - RH INSULATOR TO AXLE BOLT
2 - NUT
3 - PINION SUPPORT MOUNT
4 - LH INSULATOR MOUNT5 - LH INSULATOR TO AXLE BOLT
6 - FRONT AXLE
7 - NUT
8 - RH INSULATOR MOUNT
DRENGINE - 5.7L 9 - 219
FRONT MOUNT (Continued)

SPECIFICATIONS - TORQUE
TORQUE SPECIFICATIONS
DESCRIPTION N´m Ft. Lbs. In. Lbs.
Cab mount bolts 81 60 Ð
Cargo box bolts 108 80 Ð
Front crossmember bolts - 2WD (light duty only) 61 45 Ð
Front crossmember bolts - 2WD (heavy duty only) 75 55 Ð
Front crossmember bolts - 4WD (light duty only) 102 75 Ð
Front skid plate bolts 34 25 Ð
Lower bumper support bracket bolt 54 40 Ð
Radiator crossmember bolts - lower 28 21 Ð
Radiator crossmember bolts - upper 28 21 Ð
Rear crossmember (light duty only) 102 75 Ð
Rear crossmember (heavy duty only) 115 85 Ð
Rear spring shackle bolts 163 120 Ð
Spare tire winch bolts 41 30 Ð
Trailer hitch reinforcement bracket bolt 170 125 Ð
Transfercase skid plate bolts 34 25 Ð
Transercase skid plate crossmember bolts 34 25 Ð
Transmission mount to crossmember nuts 54 40 Ð
FRONT CROSSMEMBER
REMOVAL
(1) Raise and support the vehicle. (Refer to
LUBRICATION & MAINTENANCE/HOISTING -
STANDARD PROCEDURE)
(2) Remove the front skid plate, if equipped. (Refer
to 13 - FRAME & BUMPERS/FRAME/FRONT SKID
PLATE - REMOVAL)
(3) Remove the bolts and remove the crossmember.
(Fig. 28) or (Fig. 29)
INSTALLATION
(1) Install the crossmember.
(2) Install the bolts;
²On light duty 2WD vehicles, tighten the bolts to
61 N´m (45 ft. lbs.).
²On light duty 4WD vehicles, tighten the bolts to
102 N´m (75 ft. lbs.).
²On heavy duty 2WD vehicles, tighten the bolts
to 75 N´m (55 ft. lbs.).
(3) Install the front skid plate, if equipped. (Refer
to 13 - FRAME & BUMPERS/FRAME/FRONT SKID
PLATE - INSTALLATION)
Fig. 28 FRONT CROSSMEMBER - 2WD
1 - CROSSMEMBER
2 - BOLTS (2 PER SIDE)
13 - 22 FRAMES & BUMPERSDR
FRAME (Continued)