1999 DODGE RAM Service Repair Manual

NOTE: Fuel level sensor may also be referred to as fuel gauge
sending unit.
Removal
1) Fuel level sensor is mounted on fuel pump module. See
Fig. 31 . Fuel pump module is located on top of fuel tank. See Figs. 27
-30.
2) Remove fuel pump module. See FUEL PUMP MODULE under FUEL
SYSTEM. Disconnect electrical connector for fuel pump and fuel level
sensor from electrical connector from bottom side of electrical
connector mounted on top of fuel pump module. See Fig. 31.
3) Remove locking collar from electrical connector for fuel
pump and fuel level sensor. Locking collar must be removed so wires
for fuel level sensor may be removed from the electrical connector for
fuel pump and fuel level sensor.
CAUTION: Note location of wires in electrical connector for fuel pump
and fuel level sensor for installation reference. Wires must
be installed in correct location.
4) Mark wire location in electrical connector for fuel pump
and fuel level sensor for installation reference. Remove wires for
fuel level sensor from electrical connector for fuel pump and fuel
level sensor.
5) Note location of notch and locking tab at end of fuel
level sensor. See Fig. 31. Carefully push locking tab away from notch
while sliding fuel level sensor down the channels, toward bottom of
fuel pump module. Note wire routing when removing fuel level sensor
from fuel pump module. Remove fuel level sensor.
Installation
1) Install fuel level sensor on channels of fuel pump module.
Ensure wires are properly routed. Slide fuel level sensor onto fuel
pump module until fuel level sensor snaps into place. Ensure locking
tab is fully seated.
2) Install wires for fuel level sensor in electrical
connector for fuel pump and fuel level sensor. Install locking collar.
Install electrical connector for fuel pump and fuel level sensor on
electrical connector on bottom side of electrical connector mounted on
top of fuel pump module. Reinstall fuel pump module. To complete
installation, reverse removal procedure.
Fig. 31: Locating Fuel Level Sensor, Fuel Pump & Fuel Pump Inlet
Strainer On Typical Fuel Pump Module
Courtesy of Chrysler Corp.
FUEL PRESSURE REGULATOR

Removal & Installation
Fuel pressure regulator is incorporated with the fuel filter.
For servicing for fuel filter/fuel pressure regulator, see FUEL
FILTER/FUEL PRESSURE REGULATOR.
FUEL PUMP
Removal & Installation
Fuel pump is incorporated into the fuel pump module. See FUEL
PUMP MODULE.
FUEL PUMP INLET STRAINER
Removal & Installation
1) Fuel pump inlet strainer is mounted on fuel pump module.
See Fig. 31 . Remove fuel pump module. See FUEL PUMP MODULE.
2) Spread locking tabs on bottom of fuel pump module and
remove fuel pump inlet strainer from fuel pump module. See Fig. 31.
Remove "O" ring from end of fuel pump module if "O" ring was not
removed with fuel pump inlet strainer.
3) To install, reverse removal procedure. Ensure "O" ring is
properly seated when installing fuel pump inlet strainer. Reinstall
fuel pump module using proper procedure.
FUEL PUMP MODULE
Removal (Dakota)
1) Fuel pump module is located on top of fuel tank. See
Fig. 27 . Fuel tank must be removed for servicing of fuel pump module.
Remove fuel tank. See FUEL TANK.
2) Ensure area around fuel pump module is clean. Using Fuel
Pump Module Lock Nut Spanner Wrench (6856), remove fuel pump module
lock nut. See Fig. 32. Remove fuel pump module with rubber gasket from
fuel tank.
CAUTION: When fuel pump module is removed from fuel tank, rubber
gasket must be replaced. DO NOT reuse rubber gasket.
Installation
1) Ensure sealing area on fuel tank is clean. Using NEW
rubber gasket, install fuel pump module on fuel tank. DO NOT reuse
rubber gasket. Ensure rubber gasket remains in place.
NOTE: Fuel pump module must be properly positioned in fuel tank to
prevent float from contacting the fuel tank.
2) Rotate fuel pump module so alignment arrow on fuel pump
module is at 7 o'clock position and aligns with reference mark on fuel
tank. See Fig. 33. Install and hand tighten fuel pump module lock nut.
3) Note location of fuel pressure regulator on fuel pump
module. See Fig. 27. Ensure fuel filter/pressure regulator is
positioned on fuel pump module so fuel line fitting on side fuel
filter/fuel pressure regulator points toward driver's side of vehicle.
4) Hold fuel pump module in place while tightening fuel pump
module lock nut to specification. See TORQUE SPECIFICATIONS. Reinstall
fuel tank using proper procedure.

Fig. 32: Removing & Installing Typical Fuel Pump Module Lock Nut
(Dakota, Ram Pickup, Ram Van & Ram Wagon)
Courtesy of Chrysler Corp.
Fig. 33: Positioning Fuel Pump Module In Fuel Tank (Dakota)
Courtesy of Chrysler Corp.
Removal (Durango)
1) Fuel pump module is located on top of fuel tank. See

Fig. 28. Fuel tank must be removed for servicing of fuel pump module.
Remove fuel tank. See FUEL TANK under FUEL SYSTEM.
2) Ensure area around fuel pump module is clean. Rotate fuel
filter/pressure regulator so fuel line fitting on side fuel
filter/fuel pressure regulator points toward center of fuel pump
module.
3) Note location of metal fuel pump module lock ring and
locking fingers on the fuel tank. See Fig. 34. There are 6 locking
fingers molded into the plastic fuel tank.
4) Apply a small amount of engine oil on each locking finger
at the fuel pump module lock ring area. Engine oil will act as a
lubricant when removing fuel pump module lock ring.
5) Note location of lock tab on fuel pump module lock ring.
Pry lock tab backward while using a hammer and brass drift to tap fuel
pump module lock ring counterclockwise. Remove fuel pump module lock
ring, fuel pump module and rubber gasket from fuel tank.
CAUTION: When fuel pump module is removed from fuel tank, rubber
gasket must be replaced. DO NOT reuse rubber gasket.
Installation
1) Ensure sealing area on fuel tank is clean. Using NEW
rubber gasket, install fuel pump module on fuel tank. DO NOT reuse
rubber gasket. Ensure rubber gasket remains in place.
NOTE: Fuel pump module must be properly positioned in fuel tank to
prevent float from contacting the fuel tank.
2) Rotate fuel pump module so fuel pump is properly
positioned in the fuel tank. See Fig. 34. Apply a small amount of
engine oil on each locking finger at fuel pump module lock ring area.
Install fuel pump lock ring on fuel pump module.
3) Using a hammer and brass drift, tap fuel pump module lock
ring clockwise until the 6 locking fingers engage in fuel pump module
lock ring and lock tab engages notch on fuel pump module lock ring.
Ensure lock tab fully engages with notch on fuel pump module lock
ring. Reinstall fuel tank using proper procedure.
Fig. 34: Locating Fuel Pump Module Lock Ring, Locking Fingers &
Positioning Fuel Pump Module In Fuel Tank (Durango)
Courtesy of Chrysler Corp.
Removal (Ram Pickup)

1) Fuel pump module is located on top of fuel tank. See
Fig. 29. Fuel tank must be removed for servicing of fuel pump module.
Remove fuel tank. See FUEL TANK under FUEL SYSTEM.
2) Ensure area around fuel pump module is clean. Note
position of fuel pump module installation in fuel tank for
installation reference. Using Fuel Pump Module Lock Nut Spanner Wrench
(6856), remove fuel pump module lock nut. See Fig. 32. Remove fuel
pump module with rubber gasket from fuel tank.
CAUTION: When fuel pump module is removed from fuel tank, rubber
gasket must be replaced. DO NOT reuse rubber gasket.
Installation
1) Ensure sealing area on fuel tank is clean. Using NEW
rubber gasket, install fuel pump module on fuel tank. DO NOT reuse
rubber gasket. Ensure rubber gasket remains in place.
NOTE: Fuel pump module must be properly positioned in fuel tank to
prevent float from contacting the fuel tank.
2) Loosely install fuel pump module lock nut. Rotate fuel
pump module so electrical connector is pointing toward driver's side
of fuel tank. See Fig. 29.
3) Note location of fuel pressure regulator on fuel pump
module. See Fig. 29. Ensure fuel filter/pressure regulator is
positioned on fuel pump module so fuel line fitting on side fuel
filter/fuel pressure regulator points toward driver's side of fuel
tank.
4) Hold fuel pump module in place while tightening fuel pump
module lock nut to specification. See TORQUE SPECIFICATIONS. Reinstall
fuel tank using proper procedure.
Removal (Ram Van & Ram Wagon)
1) Fuel pump module is located on top of fuel tank. See
Fig. 30 . Fuel tank must be removed for servicing of fuel pump module.
Remove fuel tank. See FUEL TANK.
2) Ensure area around fuel pump module is clean. Using Fuel
Pump Module Lock Nut Spanner Wrench (6856), remove fuel pump module
lock nut. See Fig. 32. Remove fuel pump module with rubber gasket from
fuel tank.
CAUTION: When fuel pump module is removed from fuel tank, rubber
gasket must be replaced. DO NOT reuse rubber gasket.
Installation
1) Ensure sealing area on fuel tank is clean. Using NEW
rubber gasket, install fuel pump module on fuel tank. DO NOT reuse
rubber gasket. Ensure rubber gasket remains in place.
NOTE: Fuel pump module must be properly positioned in fuel tank to
prevent float from contacting the fuel tank.
2) Rotate fuel pump module so alignment mark on fuel pump
module aligns with reference mark on fuel tank. See Fig. 35. Install
and hand tighten fuel pump module lock nut.
3) Note location of fuel pressure regulator on fuel pump
module. See Fig. 35. Ensure fuel filter/pressure regulator is
positioned on fuel pump module so fuel line fitting on side fuel
filter/fuel pressure regulator points toward driver's side of vehicle.
4) Hold fuel pump module in place while tightening fuel pump
module lock nut to specification. See TORQUE SPECIFICATIONS. Reinstall
fuel tank using proper procedure.

Fig. 35: Positioning Fuel Pump Module In Fuel Tank & Fuel
Filter/Fuel Pressure Regulator (Ram Van & Ram Wagon)
Courtesy of Chrysler Corp.
FUEL TANK
Removal (Dakota)
1) Fuel tank may be drained by lowering the fuel tank, or by
pumping fuel from fuel tank using fuel pump. If lowering fuel tank to
drain fuel, go to step 4). If using fuel pump to drain fuel tank, go
to next step.
2) Disconnect fuel line from fuel rail. See FUEL LINE AT FUEL
RAIL. Connect Fuel Hose (6541, 6539, 6631 or 6923) for proper engine
application at fuel line fitting on fuel rail. Place remaining end of
fuel hose in an approved gasoline container.
3) Connect scan tool to Data Link Connector (DLC). DLC is a
16-pin connector attached to bottom of driver's side of the instrument
panel, just to the right of the brake pedal. Using scan tool
manufacturer's instructions, activate the fuel pump and pump fuel from
fuel tank. Once fuel tank is empty, remove scan tool. Reinstall fuel

line on fuel rail using proper procedure. Go to step 5).
4) Release fuel pressure from fuel system. See FUEL SYSTEM
PRESSURE RELEASE. Ensure negative battery cable is disconnected.
Remove fuel tank cap to release any residual fuel tank pressure.
5) Open fuel tank filler door. Fuel tank filler tube assembly
is mounted to a plastic bezel behind fuel tank filler door. See
Fig. 36. Note location of bezel-to-body screw. See Fig. 36. Remove the
3 bezel-to-body screws at the outer circumference of the plastic
bezel. DO NOT remove fuel tank filler tube assembly-to-bezel screws.
Fig. 36: Locating Plastic Bezel & Bezel Screws (Dakota)
Courtesy of Chrysler Corp.
6) Raise and support vehicle. Support fuel tank with
transmission jack. Remove fuel tank strap retaining nuts. Position
fuel tank straps toward outside of vehicle. Slightly lower fuel tank.
If fuel tank was not previously drained, ensure fuel tank cap is
installed to prevent spilling of any fuel.
7) 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. 27. Disconnect
electrical connector at fuel pump module. Disconnect vapor line from
rollover valve on top of fuel tank.
8) Lower fuel tank from vehicle. If necessary to drain fuel
tank or to remove fuel tank filler tube assembly from fuel tank, go to
next step.
9) Ensure area around disconnect fitting at fuel tank for
fuel tank filler tube assembly is clean. See Fig. 27. The small vent
tube on fuel tank filler tube assembly should be removed first.
CAUTION: Disconnect fitting on small vent tube and large fill tube
must be fully pressed onto fuel tank fitting before pushing
release sleeve into disconnect fitting. Failure to fully
press disconnect fitting fully onto fuel tank fitting will
result in damage to retaining tabs in disconnect fitting.
10) Push disconnect fitting on end of small vent tube toward
fitting fuel tank as far as possible. See Fig. 37. Ensure disconnect
fitting is fully pressed onto fuel tank fitting before attempting to
push release sleeve into disconnect fitting.
11) Push release sleeve upward into disconnect fitting as far
as possible to release the retaining tabs in disconnect fitting. See
Fig. 37 . Ensure release sleeve is pushed evenly into disconnect
fitting. Pull small vent tube with disconnect fitting from fuel tank.
Drain remaining fuel from fuel tank into an approved gasoline
container if necessary.
12) If necessary to remove large fill tube from fuel tank,
push disconnect fitting on end of large fill tube toward fitting fuel
tank as far as possible. See Fig. 37. Ensure disconnect fitting is
fully pressed onto fuel tank fitting before attempting to push release
sleeve into disconnect fitting.
13) Push release sleeve upward into disconnect fitting as far
as possible to release the retaining tabs in disconnect fitting. See
Fig. 37 . Ensure release sleeve is pushed evenly into disconnect
fitting. Pull large fill tube with disconnect fitting from fuel tank.
Fig. 37: Removing & Installing Disconnect Fittings On Fuel Tank
Fitting (Dakota)
Courtesy of Chrysler Corp.
Installation