1999 DODGE RAM oil filter

Engine Oil Pressure Sensor
(8.0L) Near oil filter.
Front Wheel Speed Sensors On left and right steering
knuckles.
Heated Oxygen Sensor (HO2S)
(Downstream) (3.9L) Near outlet end of catalytic\
converter.
Heated Oxygen Sensor (HO2S)
(Downstream) (5.2L) Near outlet end of catalytic\
converter.
Heated Oxygen Sensor (HO2S)
(Left Upstream) (5.9L Heavy Duty) In left exhaust manifold
downpipe.
Heated Oxygen Sensor (HO2S)
(Left Upstream) (8.0L) In left exhaust manifold
downpipe.
Heated Oxygen Sensor (HO2S)
(Post-Catalyst) (5.9L Medium Duty) Near outlet end of catalytic\
converter.
Heated Oxygen Sensor (HO2S)
(Post-Catalyst) (8.0L California) In exhaust pipe, rear of
catalytic converter.
Heated Oxygen Sensor (HO2S)
(Pre-Catalyst) (5.9L Medium Duty) At inlet of catalytic
converter.
Heated Oxygen Sensor (HO2S)
(Pre-Catalyst) (8.0L California) At inlet of catalytic
converter.
Heated Oxygen Sensor (HO2S)
(Right Upstream) (5.9L Heavy Duty) In right exhaust manifold
downpipe.
Heated Oxygen Sensor (HO2S)
(Right Upstream) (8.0L) In right exhaust manifold
downpipe.
Heated Oxygen Sensor (HO2S)
(Upstream) (3.9L) At inlet of catalytic
converter.
Heated Oxygen Sensor (HO2S)
(Upstream) (5.2L) At inlet of catalytic
converter.

Stoplight Switch On brake pedal bracket.








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MISCELLANEOUS









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Component Component Location








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Blower Motor Resistor Block Behind right side of dash, on
A/C-heater housing.
Data Link Connector (DLC) Left bottom of dash.
Fuel Heater (Diesel) In top of fuel filter housing.
Ignition Coil 4-Pack & 6-Pack Right side of engine.

Fig. 2: Identifying Retainer Type Fuel Line Disconnect Fittings
Courtesy of Chrysler Corp.
ENGINE
Removal (Ram Van/Wagon)
1) Release fuel pressure. See FUEL PRESSURE RELEASE.
Disconnect negative battery cable. Drain cooling system and engine
oil. Remove and discard oil filter.
2) Remove engine cover, air cleaner and oil dipstick.
Discharge A/C system (if equipped) using approved refrigerant
recovery/recycling equipment. Disconnect A/C lines at condenser, and
plug openings. Remove A/C compressor. Disconnect fan shroud.
3) Remove front bumper, grille and support brace. Disconnect
coolant hoses. Remove radiator, condenser and support as an assembly.
4) Remove upper fan shroud. Remove power steering pump with
hoses attached, and set aside. Remove air pump, spark plug wires and
distributor cap. Disconnect necessary electrical wiring, coolant hoses
and vacuum hoses. Disconnect fuel lines. See FUEL LINE DISCONNECT

2) Ensure journal diameter, taper and out-of-round are within
specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table
under ENGINE SPECIFICATIONS. Upper main bearings contain oil holes,
while lower bearings installed in main bearing cap do not.
3) Apply light coat of engine oil to threads before
tightening bolt to specification. See TORQUE SPECIFICATIONS table.
Ensure oil clearance and end play are within specification. See
CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table.
CAUTION: Crankshaft journal grinding should not exceed .012" (.30 mm)
under standard size. DO NOT grind thrust surfaces of No. 3
main bearing. Final paper or cloth polishing after regrind
must be done in same direction as engine rotation.
Thrust Bearing
Thrust bearing is located on No. 3 main bearing. Replace
thrust bearing if crankshaft end play is not within specification. See
CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE
SPECIFICATIONS.
NOTE: Cylinder bore should be measured at room temperature of 70
F
(21C).
Cylinder Block
1) Check cylinder bore, out-of-round and taper. Measure
cylinder bore diameter below top surface of cylinder bore, middle of
bore and bottom of cylinder bore. Bore cylinder block if bore diameter
is not within specification. See CYLINDER BLOCK table under ENGINE
SPECIFICATIONS.
NOTE: Cylinder block is marked to indicate oversize valve lifters.
See SPECIAL ENGINE MARKS.
2) Check valve lifter bore diameter. Check for scoring. If
scoring exists or lifter bore diameter is not within specification,
ream cylinder block bore for next oversize valve lifter. See VALVE
LIFTERS table under ENGINE SPECIFICATIONS.
ENGINE OILING
ENGINE LUBRICATION SYSTEM
System has a rotor-type oil pump and full-flow oil filter.
Oil is forced by pump through a series of oil passages in engine to
provide lubrication to engine components. Oil is supplied to rocker
assembly through hollow push rods. Push rods are fed oil from lifters.
See Fig. 17 .
Crankcase Capacity
On 3.9L, oil capacity with oil filter is 4.0 qts. (3.8L). On
5.2L and 5.9L, oil capacity with oil filter is 5.0 qts. (4.7L).
Oil Pressure
Oil pressure is 6 psi (.4 kg/cm
) at idle and 30-80 psi (2.1-
5.6 kg/cm) at 3000 RPM with engine at normal operating temperature.

Fig. 17: Cross-Sectional View Of Engine Oil Circuit
Courtesy of Chrysler Corp.
OIL LINE PLUG
1) The oil line plug is located in vertical passage in rear
of block between oil-to-filter and oil-from-filter passages. See
Fig. 18 . Missing or improperly installed plug could cause erratic, low
or no oil pressure.
2) To check installation, remove oil sending unit and insert
wire down passage. Oil line plug should be 7.50-7.68 in. (190.0-195.2
mm) from machined surface of block. If plug is too high, use suitable
dowel to position properly. If plug is too low, remove oil pan, oil
pump and rear main bearing cap. Use suitable dowel to position
properly.
3) To remove for passage cleaning or plug replacement, drive
plug from oil sending unit hole out bottom of block. When installing

Engine Mount Through-Bolt
Dakota 2WD & Durango 2WD ................................. 50 (68)\
Dakota 4WD, Durango 4WD & Ram Pickup .................... 75 (102)\
Grand Cherokee ............................................. 60 (81)\
Engine Mount-To-Cylinder Block Bolt
Dakota & Durango ......................................... 30 (41)\
Ram Pickup ............................................... 60 (81)\
Ram Van/Wagon & Grand Cherokee ............................. 65 (88)\
Engine Mount-To-Frame Bracket Bolt/Nut
Ram Pickup & Ram Van/Wagon .............................. 75 (102)\
Exhaust Manifold Bolt & Nut
Durango .................................................. 18 (24)\
All Others ................................................. 25 (34)\
Flywheel/Flexplate-To-Crankshaft Bolt ...................... 55 (75)\
Front Cover Bolt ........................................... 30 (41)\
Heat Shield Bolts .......................................... 30 (41)\
Main Bearing Cap Bolt ..................................... 85 (115)\
Oil Drain Plug ............................................. 25 (34)\
Oil Filter Adapter Stud .................................... 50 (68)\
Oil Pan Bolt ............................................... 18 (24)\
Oil Pump Bolt .............................................. 30 (41)\
Rocker Arm Bolt ............................................ 21 (28)\
Shift Motor Bolt
Dakota 4WD & Durango 4WD ................................. 65 (88)\
Spark Plug ................................................. 30 (41)\
Starter Bolts .............................................. 50 (68)\
Throttle Body Bolt ......................................... 17 (23)\
Transfer Case Yoke Bolt
Dakota 4WD & Durango 4WD ................................. 20 (27)\
Vibration Damper Bolt .................................... 135 (183)\
Water Pump Bolt ............................................ 30 (41)\
INCH Lbs. (N.m)
Intake Manifold Bolt ( 4)
Step 1 .................................................. 24 (2.7)\
Step 2 .................................................. 48 (5.4)\
Step 3 .................................................. 84 (9.5)\
Step 4 (Verify Torque All Bolts) ........................ 84 (9.5\
)
Intake Manifold Plenum Pan Bolt
Step 1 .................................................. 24 (2.7)\
Step 2 .................................................. 48 (5.4)\
Step 3 .................................................. 84 (9.5)\
Step 4 (Verify Torque) .................................. 84 (9.5\
)
Oil Pump Cover Bolt ........................................ 97 (11)\
Valve Cover Bolts .......................................... 95 (11)\
( 1) - Bolts through clutch housing into cylinder block.
( 2) - Bolts through cylinder block into clutch housing.
( 3) - Tighten bolts in sequence. See 7.
( 4) - Tighten bolts in sequence. See 5 and 6.









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ENGINE SPECIFICATIONS
GENERAL SPECIFICATIONS (3.9L)








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Application Specification
Displacement .................................... 239 Cu. In. (3.9L)\
Bore ............................................... 3.91" (99.3 mm)\
Stroke ............................................. 3.31" (84.1 mm)\

CLUTCH PEDAL POSITION SWITCHES
COLD START INJECTORS
CONNECTORS
COOLANT
COOLANT RECOVERY TANKS
COOLING FAN MOTOR MODULES
COOLING FAN MOTOR RELAYS AND MODULES
COOLING FAN MOTOR RESISTORS
COOLING FAN MOTOR SENSORS AND SWITCHES
COOLING FAN MOTOR SWITCHES
COOLING FAN MOTORS
CRANKSHAFT POSITION SENSORS
DECEL VALVES
DEFLECTORS
DIP STICKS AND TUBES
DIP STICK TUBES
DISTRIBUTOR ADVANCES AND RETARDERS (MECHANICAL AND VACUUM)
DISTRIBUTOR BOOTS AND SHIELDS
DISTRIBUTOR CAPS
DISTRIBUTOR RETARDERS (MECHANICAL AND VACUUM)
DISTRIBUTOR ROTORS
DISTRIBUTOR SHIELDS
DISTRIBUTORS
EARLY FUEL EVAPORATION VALVES (HEAT RISER ASSEMBLIES)
EGR COOLERS
EGR EXHAUST MANIFOLD PASSAGES
EGR INTAKE AND EXHAUST MANIFOLD PASSAGES
EGR PLATES AND COOLERS
ELECTRONIC SPARK CONTROL MODULES
ELECTRONIC TRANSMISSION CONTROL DEVICES
ELECTRONIC TRANSMISSION FEEDBACK DEVICES
ENGINE COOLANT TEMPERATURE SENSORS
ENGINE COOLING SYSTEMS
ENGINE COVERS (OIL PAN, VALVE COVER, TIMING COVER)
ENGINE OIL
ENGINE OIL CANISTERS
ENGINE OIL COOLERS (EXTERNAL)
ENGINE OIL DRAIN PLUGS AND GASKETS
ENGINE OIL FILTERS AND CANISTERS
ENGINE OIL GASKETS
ENGINE OIL PRESSURE GAUGES (MECHANICAL)
EVAPORATIVE EMISSION (EVAP) CANISTER FILTERS
EVAPORATIVE EMISSION (EVAP) CANISTER PURGE DEVICES
EVAPORATIVE EMISSION (EVAP) CANISTERS
EVAPORATIVE EMISSION (EVAP) FEEDBACK DEVICES
EXHAUST GAS RECIRCULATION DEVICES
EXHAUST GAS RECIRCULATION FEEDBACK DEVICES
EXPANSION PLUGS
FAN CONTROL SENSORS
FUEL
FUEL ACCUMULATORS AND DAMPERS
FUEL AND COLD START INJECTORS
FUEL DAMPERS
FUEL DELIVERY CHECK VALVES
FUEL DISTRIBUTORS (BOSCH CIS)
FUEL FILLER NECKS AND RESTRICTORS
FUEL FILTERS
FUEL INJECTORS
FUEL LEVEL SENDERS7
FUEL PRESSURE REGULATORS
FUEL PUMPS (IN-TANK AND EXTERNAL, ELECTRICAL OR MECHANICAL)
FUEL RAILS
FUEL RESTRICTORS

Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.
Restricted, affecting
performance ............ A .. Require repair or replacement.









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AIR FILTER ELEMENTS
AIR FILTER ELEMENT INSPECTION








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Condition Code Procedure
Leaking ................. A ............ Require replacement.
Paper filter element
oil-soaked ............ A ........ ( 1) Require replacement.
Maintenance intervals ... 3 ... Suggest replacement to comply
with vehicle's OEM recommended
service intervals.
Melted .................. A ........... Required replacement.
Missing ................. C ............ Require replacement.
Restricted, affecting
performance ............ A ............ Require replacement.
Water-contaminated ...... A ........ ( 1) Require replacement.
( 1) - Further inspection required to determine cause.









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AIR FILTER GASKETS
See AIR FILTER HOUSINGS AND GASKETS .
AIR FILTER HOUSINGS AND GASKETS
AIR FILTER HOUSING AND GASKET INSPECTION








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Condition Code Procedure
Attaching hardware
broken ................. A ... Require repair or replacement
of hardware.
Attaching hardware
missing ................ C .......... Require replacement of
hardware.
Attaching hardware not
functioning ............ A ... Require repair or replacement
of hardware.
Leaking ................. A .. Require repair or replacement.
Missing ................. C ............ Require replacement.









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AIR FUEL RATIO SENSORS