1999 DODGE RAM low oil pressure

Removal & Installation
See INTAKE MANIFOLD AIR HEATER RELAYS under RELAYS &
SOLENOIDS.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS








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Application Ft. Lbs. (N.m)\
Access Plug ................................................ 11 (15)\
AFC Line-To-Fuel Injection Pump Fitting .................... 18 (24)\
Air Inlet Housing Bolt ..................................... 18 (24)\
Engine Bracket-To-Engine Bolts ............................. 18 (24)\
Engine Coolant Temperature Sensor .......................... 40 (54)\
Engine Speed Sensor Nut .................................... 18 (24)\
Fuel Injection Pump Drive Gear Nut ....................... 125 (170)\
Fuel Injection Pump Lower Bracket-To-Pump Bolts ............ 18 (24)\
Fuel Injection Pump Mount Nuts ............................. 32 (43)\
Fuel Injector Retaining Nut ................................ 44 (60)\
Fuel Line-To-Fuel Heater Fitting ........................... 18 (24)\
Fuel Line-To-Fuel Transfer Pump ............................ 18 (24)\
Fuel Supply Line Banjo Bolt ................................ 18 (24)\
Fuel Tank Strap Nut ........................................ 30 (41)\
Fuel Transfer Pump Bolt .................................... 18 (24)\
High-Pressure Fuel Line Clamp Bolt ......................... 18 (24)\
High-Pressure Fuel Line Nut (At Injector) .................. 28 (38\
)
High-Pressure Fuel Line Nut (At Pump) ...................... 18 (24\
)
Intake Manifold Air Heater Housing Bolt .................... 18 (24)\
Intake Manifold Air Temperature Sensor ..................... 20 (27)\
Intake Manifold Cover Bolt ( 1) ............................. 18 (24)
Oil Fill Plug .............................................. 21 (29)\
Overflow Valve-To-Fuel Injection Pump ...................... 24 (33)\
Park/Neutral Switch ........................................ 25 (34)\
Plastic Fuel Tank Module Lock Nut .......................... 32 (43)\
Starter Mounting Bolt ...................................... 32 (43)\
Turbocharger Oil Drain Line Bolt ........................... 18 (24)\
Turbocharger Oil Supply Line Nut ........................... 11 (15)\
Turbocharger Retaining Nut ................................. 24 (33)\
INCH Lbs. (N.m)
Air Inlet Tube-To-Turbocharger Clamp Nut .................. 72 (8.1)\
Canister Nut ............................................ 120 (13.6)\
Condenser-To-Intercooler Nut ............................. 95 (10.7)\
Condenser-To-Intercooler Screw ........................... 95 (10.7)\
Drain Valve-To-Canister Bolt .............................. 40 (4.5)\
Exhaust Pipe-To-Turbocharger Clamp Nut .................... 72 (8.1)\
Fuel Bleed Bolt ........................................... 72 (8.1)\
Fuel Injector Drain Line Assembly Retaining Clamp Bolt .. 120 (13.6)\
Fuel Injector Drain Line-To-Fuel Injector Banjo Bolt ...... 84 (9.5)\
Intake Manifold Air Heater Relay Assembly Retaining Bolt .. 40 (4.5)\
Intercooler Bolt .......................................... 17 (1.9)\
Intercooler Inlet & Outlet Duct Clamp ..................... 72 (8.1)\
PCM Mounting Bolt ......................................... 35 (4.0)\
Water-In-Fuel (WIF) Sensor ................................ 20 (2.3\
)
( 1) - Apply thread sealant to bolt threads.









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NOTE: Oil pressure sensor may also be referred to as engine oil
pressure sensor.
Removal & Installation
For oil pressure sensor location, see OIL PRESSURE SENSOR
LOCATION table. Service information is not available from
manufacturer.
OIL PRESSURE SENSOR LOCATION









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Application Location
Dakota
2.5L ... ( 1) Passenger's Side Of Cylinder Block, Below Distributor
3.9L, 5.2L & 5.9L ... ( 1) Passenger's Side Rear Corner Of Cylinder
Block, Below Distributor
Durango .. ( 1) Passenger's Side Rear Corner Of Cylinder Block, Below
Distributor
Ram Pickup
3.9L, 5.2L & 5.9L ... ( 2) Passenger's Side Rear Corner Of Cylinder
Block, Below Distributor
8.0L ......................................... ( 2) Near Oil Filter
Ram Van & Ram Wagon ... ( 3) Passenger's Side Rear Corner Of Cylinder
Block, Below Distributor
( 1) - Contains a Gray/Yellow wire and a Black/Light Blue wire in the
electrical connector.
( 2) - Contains a Gray/Orange wire and a Black/Light Blue wire in the
electrical connector.
( 3) - Contains a Gray wire and a Black/Light Blue wire in the
electrical connector.









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OUTPUT SHAFT SPEED SENSOR
NOTE: Output shaft speed sensor may also be referred to as
transmission speed sensor.
Removal & Installation (A/T Models)
Output shaft speed sensor is located on lower edge of
overdrive case on rear of transmission. See Fig. 10. Disconnect
electrical connector at output shaft speed sensor. Remove output shaft
speed sensor with "O" ring from transmission. To install, reverse
removal procedure using NEW "O" ring.
Fig. 10: Locating Output Shaft Speed Sensor & Park/Neutral Switch
(A/T)
Courtesy of Chrysler Corp.
PARK/NEUTRAL SWITCH

pulley for the accessory drive belt, as these bolts are under
tension. If necessary to remove these bolts, accessory drive
belt must be removed first.
2) Remove ignition coil retaining bolts or nuts with ignition
coil from the ignition coil mounting bracket. On 3.9L, 5.2L and 5.9L
with light-duty emissions, DO NOT remove ignition coil-to-cylinder
head mounting bracket bolts, as these bolts are under tension. On all
applications, to install, reverse removal procedure. Tighten ignition
coil retaining bolts or nuts to specification. See TORQUE
SPECIFICATIONS.
Removal & Installation (Ram Pickup 8.0L)
1) Two separate ignition coils are located above passenger's
side valve cover. Each ignition coil can be serviced separately. On
all ignition coil applications, disconnect spark plug wires and
electrical connector from ignition coil.
2) Remove ignition coil retaining bolts and ignition coil
from ignition coil mounting bracket. To install, reverse removal
procedure. Ensure ignition coil is mounted on ignition coil mounting
bracket with electrical connector facing downward. Tighten ignition
coil retaining bolts to specification. See TORQUE SPECIFICATIONS.
FUEL SYSTEM
FUEL SYSTEM PRESSURE RELEASE
WARNING: Always release fuel pressure before disconnecting any fuel
injection-related component. DO NOT allow fuel to contact
engine or electrical components.
1) Remove fuel cap from fuel tank. Note location of spring
loaded flapper valve inside fuel tank filler tube assembly. Flapper
valve is located just below the fuel cap area on fuel tank filler tube
assembly. Flapper valve is used as a secondary way of sealing the fuel
tank if fuel cap was not properly tightened.
WARNING: When opening flapper valve inside fuel tank filler tube
assembly, ensure a non-metallic object is used to prevent any
sparks.
2) Using a non-metallic object, push flapper valve inside
filler tube assembly downward to release any pressure from the fuel
tank. Ensure all pressure is released from fuel tank.
3) Remove fuel pump relay from Power Distribution Center
(PDC). Fuel pump relay may be identified by label on inside of PDC
cover. See POWER DISTRIBUTION CENTER (PDC) LOCATION table.
4) On all models, start engine and allow engine to idle until
engine stalls. Attempt to restart engine until engine will no longer
run. Turn ignition off.
CAUTION: Ensure steps 1) through 4) are performed before proceeding.
Steps 3) and 4) must be performed to ensure most of the fuel
pressure is released from fuel rails to prevent an excessive
amount of fuel being delivered into the cylinders.
5) Remaining fuel pressure is released by energizing a fuel
injector. Disconnect electrical connector at any fuel injector.
6) Connect jumper wire between one electrical terminal on
fuel injector and positive battery terminal. Connect another jumper
wire on remaining electrical terminal on fuel injector.

fitting assembly out of the plastic shield. Use care not to damage
fill and vent fitting assembly. Disconnect fuel line from fuel
filter/fuel pressure regulator on fuel pump module using proper
procedure for fuel line disconnect fitting. See FUEL LINE DISCONNECT
FITTINGS. Fuel pump module is located on top of fuel tank. See Fig. 30
.
11) Disconnect electrical connector at fuel pump module.
Disconnect vapor hoses from rollover valves on top of fuel tank. See
Fig. 30 . Lower fuel tank from vehicle. Use care not to damage fill and
vent hose fitting assembly.
Installation
1) To install, reverse removal procedure. Install fuel lines
on fuel filter/fuel pressure regulator on fuel pump module using
proper procedure. See FUEL LINE DISCONNECT FITTINGS.
2) Ensure retaining tabs on fill and vent hose fitting
assembly fully engage the plastic shield. Tighten fuel tank strap
retaining nuts to specification. See TORQUE SPECIFICATIONS. Start
engine and check for fuel leaks.
FUEL RAIL & INJECTORS
Removal (Dakota 2.5L)
1) Release fuel pressure from fuel system. See FUEL SYSTEM
PRESSURE RELEASE. Ensure negative battery cable is disconnected.
2) Disconnect air inlet duct at throttle body for access to
fuel rail. Disconnect vent line from fuel damper at end of fuel rail
(if equipped).
3) Note electrical connector location on injectors for
installation reference. Disconnect electrical connectors at injectors.
Disconnect fuel line from fuel rail. See FUEL LINE AT FUEL RAIL.
Disconnect control cables at throttle body. Remove control cable
mounting bracket from intake manifold for access to fuel rail.
4) Remove fuel rail bolts. Ensure area around injectors and
intake manifold is clean. Using rocking motion, remove fuel rail with
injectors from intake manifold.
5) If removing injector from fuel rail, remove retaining clip
from fuel rail and injector. Retaining clip is located at top of
injector and fuel rail. Remove injector with "O" ring from fuel rail.
Installation
1) If installing injector on fuel rail, install NEW "O" ring
on injector. Coat "O" ring on injector with engine oil. Install
injector on fuel rail. Install retaining clip on injector and fuel
rail.
2) To install remaining components, reverse removal procedure
using NEW "O" ring at bottom of each injector. Coat "O" ring on
injector with engine oil before installing injectors and fuel rail.
3) Tighten fuel rail bolts to specification. See TORQUE
SPECIFICATIONS. Install fuel line on fuel rail using proper procedure.
See FUEL LINE AT FUEL RAIL. Start engine and check for leaks.
Removal (Dakota 3.9L, 5.2L & 5.9L, Durango, Ram Pickup 3.9L,
5.2L & 5.9L, Ram Van & Ram Wagon)
1) Release fuel pressure from fuel system. See FUEL SYSTEM
PRESSURE RELEASE. Ensure negative battery cable is disconnected.
2) On Ram Van and Ram Wagon, remove engine cover. On all
models, remove air cleaner. Remove throttle body from intake manifold.
See THROTTLE BODY. On A/C equipped models, remove A/C compressor-to-
intake manifold support brace at rear of A/C compressor.
3) On all models, note electrical connector location on
injectors for installation reference. Disconnect electrical connectors
at injectors. Disconnect any necessary wiring electrical connectors

for access to fuel rails and injectors.
CAUTION: Both fuel rails are serviced as an assembly. DO NOT attempt
to separate fuel rail from connecting fuel hose at rear of
each fuel rail. Connecting fuel hose does not use any form of
clamps on the hose. DO NOT use any clamps on connecting fuel
hose. When removing fuel rails with injectors, use care not
to bend connecting fuel hose.
4) Disconnect fuel line from fuel rail. See FUEL LINE AT FUEL
RAIL. Remove fuel rail bolts. Ensure area around injectors and intake
manifold is clean.
5) Using rocking motion, pull driver's side fuel rail with
injectors upward from intake manifold until injectors just clear
intake manifold. Repeat procedure on passenger's side fuel rail.
Remove fuel rails with injectors from intake manifold.
6) If removing injector from fuel rail, remove retaining clip
from fuel rail and injector. Retaining clip is located at top of
injector and fuel rail. Remove injector with "O" ring from fuel rail.
Installation
1) If installing injector on fuel rail, install NEW "O" ring
on injector. Coat "O" ring on injector with engine oil. Install
injector on fuel rail. Install retaining clip on injector and fuel
rail.
2) To install remaining components, reverse removal procedure
using NEW "O" ring at bottom of each injector. Coat "O" ring on
injector with engine oil before installing injectors and fuel rails.
3) Push passenger's side fuel rail and then driver's side
fuel rail downward until shoulder on each injector contacts the intake
manifold. Ensure all injectors are fully seated.
4) Tighten fuel rail bolts and throttle body bolts to
specification. See TORQUE SPECIFICATIONS. Install fuel line on fuel
rail using proper procedure. See FUEL LINE AT FUEL RAIL under FUEL
SYSTEM. Start engine and check for leaks.
Removal (Ram Pickup 8.0L)
1) Release fuel pressure from fuel system. See FUEL SYSTEM
PRESSURE RELEASE. Ensure negative battery cable is disconnected.
2) Remove throttle body from upper intake manifold. See
THROTTLE BODY. Remove ignition coils with mounting bracket for access
to fuel rails.
3) Upper intake manifold must be removed for servicing of
fuel rails and injectors. Remove generator-to-upper intake manifold
brace and A/C compressor-to-upper intake manifold brace. Remove
generator and A/C compressor if necessary for removal of upper intake
manifold.
4) Disconnect necessary vacuum lines and hoses for removal of
upper intake manifold. Remove bolts, upper intake manifold and gasket
from lower intake manifold.
5) Note electrical connector location on injectors for
installation reference. Disconnect electrical connectors at injectors.
Disconnect fuel line from fuel rail. See FUEL LINE AT FUEL RAIL.
6) Remove fuel rail bolts. Ensure area around injectors and
lower intake manifold is clean. Using rocking motion, pull driver's
side fuel rail with injectors upward from intake manifold until
injectors just clear intake manifold. Repeat procedure on passenger's
side fuel rail. Remove fuel rails with injectors from lower intake
manifold.
7) If removing injector from fuel rail, remove retaining clip
from fuel rail and injector. Retaining clip is located at top of
injector and fuel rail. Remove injector with "O" ring from fuel rail.

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Engine Oil  Capacity, Upper Safe Mark  10 Qts. (9.5L) 


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 Capacity, Lower Safe Mark  8 Qts. (7.5L) 

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Engine  Drained  26 Qts. (24.5L) 

Coolant   

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Automatic  46RE: Dry Fill  17 Qts. (16L) 

Transmission 
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Fluid  47RE: Dry Fill  17 Qts. (16L) 

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Manual  NV4500  4 Qts. (3.8L) 

Transmission   

Fluid   

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Rear Axle  DANA 70 Model 267 (2WD)  7 Pts. (3.3L) 

Lubricant 
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 DANA 70 Model 267 (4WD)  7.8 Pts. (3.6L) 


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 DANA 80 Model 286 (2WD)  6.8.Pts. (3.2L) 


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 DANA 80 Model 286 (4WD)  10.1 Pts. (4.8L) 

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Rear Axle  Model 267 (2WD)  7 Pts. (3.3L) 

Limited Slip 
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Differential  Model 267 (4WD)  7.8 Pts. (3.6L) 


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 Model 286 (2WD)  6.8 Pts. (3.2L) 


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 Model 286 (4WD)  10.1 Pts. (4.8L) 

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Front Axle  Model 248  7.6 Pts. (3.6L) 

Lubricant   

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Transfer Case NV241 HD  6.5 Pts. (3.1L) 

Fluid   

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Power Take  NV021  4.6 Pts. (2.1L) 

Off Adapter   

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Power  Drained  2.7 Pts. (1.3L) 

Steering   

Fluid   

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A/C  Charge Capacity  32 Oz. (.9Kg) 

Refrigerant   

  

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Refrigerant  A/C System Capacity  7.75 Oz. (230ML) 

Oil   

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Fuel Tank  Capacity  35 Gal. (132L) 

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(
1) - Capacities are recommended or calculated levels. Always use 

dipstick (if available) to measure level. 
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MISCELLANEOUS NOTES
* Once a month, check tire pressure and look for unusual wear

REMOVAL & INSTALLATION
CAUTION: When battery is disconnected, vehicle computer and memory
systems may lose memory data. Driveability problems may exist
until computer systems have completed a relearn cycle. See
the COMPUTER RELEARN PROCEDURES article in GENERAL
INFORMATION before disconnecting battery.
POWER STEERING PUMP (GASOLINE)
WARNING: DO NOT attempt to remove power steering pump without removing
power steering pump belt. Personal injury or pulley damage
could result.
Removal
1) Disconnect and isolate negative battery cable. To remove
serpentine belt, rotate tensioner clockwise and hold in place, slide
belt from tensioner pulley. Place drain pan under pump. Disconnect and
cap hoses.
2) Remove bracket-to-engine block bolts. Remove pump, pulley
and mounting bracket as an assembly. To allow access to pump screws,
remove pump pulley. See PUMP PULLEY. Remove bracket-to-pump screws.
Installation
To install pump, reverse removal procedure. Fill and bleed
system. See HYDRAULIC SYSTEM BLEEDING under LUBRICATION.
VACUUM/POWER STEERING PUMP (DIESEL)
Removal
1) Disconnect negative battery cable. Place drip pan under
vacuum/power steering pump. Disconnect and cap power brake booster
hose at vacuum pump and hydraulic lines at power steering pump.
Disconnect oil pressure sending unit electrical connector. Remove
sending unit from engine block and plug hole in block. Disconnect and
cap oil feed line from bottom of vacuum pump.
2) Remove vacuum/power steering pump-to-engine block nuts and
bolts, and mounting bracket. Remove upper pump bolt and remove pump.
Drain fluid from steering pump reservoir. Remove gaskets from mounting
surfaces.
CAUTION: DO NOT damage internal vacuum pump oil seal when separating
steering pump from vacuum pump. See Fig. 5.
3) Remove steering pump-to-vacuum pump bracket bolts.
Carefully slide steering pump from bracket. Remove 2 pump body
spacers. See Fig. 5.
NOTE: Steering pump housing and spacers must mate completely with
vacuum pump bracket.
Installation
1) Install 2 pump body spacers and rotate drive gear until
steering pump and vacuum pump drive splines align. See Fig. 5.
Carefully install steering pump on vacuum pump bracket to prevent
damaging oil seal.

Removal
1) Place wheels in straight-ahead position. Place drain pan
under steering gear assembly. Disconnect and cap pressure and return
hoses from steering gear. Disconnect steering column shaft coupling
from steering gear stub shaft.
2) Raise and support vehicle. Disconnect steering linkage
(center link) from pitman arm. See Fig. 9. Disconnect stabilizer bar
(if necessary). Place reference mark on pitman arm and sector shaft.
Remove nut and pitman arm from sector shaft. Remove steering gear-to-
frame bolts. Remove steering gear.
Installation
1) Install steering gear with bolts finger tight. Center
steering gear and align stub shaft with steering column. Install
steering column shaft coupling bolt and tighten to specification. See
TORQUE SPECIFICATIONS.
CAUTION: Stake pitman arm nut against pitman arm to ensure proper
retention.
2) Reposition steering gear to eliminate binding, and tighten
bolts to specification. Install pitman arm on sector shaft with
reference marks aligned. Install lock washer and nut. Tighten nut to
specification.
3) To install remaining components, reverse removal
procedure. Fill pump reservoir. Bleed air from hydraulic system. See
HYDRAULIC SYSTEM BLEEDING under LUBRICATION.
SECTOR SHAFT OIL SEAL
Removal
1) Raise and support vehicle. Place wheels in straight-ahead
position. Disconnect steering linkage (center link) from pitman arm.
Disconnect stabilizer bar (if necessary).
2) Place reference mark on pitman arm and sector shaft.
Remove nut and pitman arm from sector shaft. Place drain pan under
steering gear. Remove retaining ring and steel washer. See Fig. 1.
CAUTION: DO NOT hold steering wheel in left-turn position for more
than 2 seconds.
3) Start engine and momentarily hold steering wheel in
extreme left-turn position. When pressure develops, this should force
upper oil seal, steel washer and lower oil seal from steering gear
housing. Stop engine and remove seals.
Installation
1) Ensure seal bore of steering gear is free of burrs and
sector shaft is free of pitting or roughness. Lubricate replacement
seals and steel washers with power steering fluid.
2) Wrap sector shaft with plastic tape or .005" (.13 mm)
thick shim stock. Install upper oil seal (single lip seal) and steel
washer first. Oil seal must be installed only deep enough to allow for
remaining oil seal, steel washer and retaining ring.
CAUTION: DO NOT install upper oil seal against inner bore surface of
steering gear housing. Oil seals must be installed so each
oil seal is separately seated in shaft bore.
3) Install lower oil seal (double lip seal) and steel washer\
.
Oil seal must be installed only deep enough to allow for steel washer
and retaining ring. Remove tape or shim stock and install retaining
ring.