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(1) Position relay and install a new rivet (Fig. 22).
(2) Connect electrical connector to relay.
(3) Install closure panel and attaching screws.
(4) Connect negative cable to battery.
WATER PUMP - 2.4L
DESCRIPTION
The water pump has a cast aluminum body and
housing with a stamped steel impeller. The water
pump bolts directly to the block (Fig. 23). The cylin-
der block to water pump seal is provided by a rubber
O-ring. The water pump is driven by the engine tim-
ing belt.
OPERATION
The water pump is the heart of the cooling system.
The coolant is pumped through the engine block, cyl-
inder head, heater core, and radiator.
REMOVAL
(1) Disconnect negative cable from battery.
(2) Raise vehicle on a hoist.
(3) Remove the right inner splash shield.
(4) Remove the accessory drive belts. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL)
(5) Drain the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(6) Support engine from the bottom and remove
right engine mount. (Refer to 9 - ENGINE/ENGINE
MOUNTING/RIGHT MOUNT - REMOVAL)
(7) Remove right engine mount bracket.
(8) Remove the timing belt. (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKET(S - REMOVAL)
(9) Remove timing belt idler pulley.
(10) Hold camshaft sprocket with Special tool
C-4687 and adaptor C-4687-1 while removing bolt.
Remove both cam sprockets.
(11) Remove the timing belt rear cover (Refer to 9
- ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL) .
(12) Remove the generator and bracket (Fig. 24).
Fig. 22 Radiator Fan Relay
1 - FRONT FASCIA
2 - FAN RELAY
3 - RIVET
4 - A/C CONDENSER (FRONT SIDE)
Fig. 23 Water Pump
1 - CYLINDER BLOCK
2 - WATER PUMP
7 - 30 ENGINERS
RADIATOR FAN RELAY (Continued)
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(13) Remove water pump attaching screws to
engine (Fig. 25).
CLEANING
Clean gasket mating surfaces as necessary.
INSPECTION
Replace water pump body assembly if it has any of
these defects:
(1) Cracks or damage on the body.
(2) Coolant leaks from the shaft seal, evident by
wet coolant traces on the pump body.
(3) Loose or rough turning bearing.
(4) Impeller rubs either the pump body or the
engine block.
(5) Impeller loose or damaged.
(6) Sprocket or sprocket flange loose or damaged.
INSTALLATION
(1) Install new O-ring gasket in water pump body
O-ring groove (Fig. 26).
CAUTION: Make sure O-ring is properly seated in
water pump groove before tightening screws. Animproperly located O-ring may be damaged and
cause a coolant leak.
(2) Assemble pump body to block and tighten
screws to 12 N´m (105 in. lbs.) (Fig. 25). Pressurize
cooling system to 103.4 Kpa (15 psi) with pressure
tester and check water pump shaft seal and O-ring
for leaks.
(3) Rotate pump by hand to check for freedom of
movement.
(4) Install the timing belt rear cover. (Refer to 9 -
ENGINE/VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - INSTALLATION)
(5) Install camshaft sprockets and torque bolts to
101 N´m (75 ft. lbs.).
(6) Install timing belt idler pulley and torque
mounting bolt to 61 N´m (45 ft. lbs.).
(7) Install the timing belt. (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKET(S - INSTALLATION)
(8) Install the generator mount bracket. (Fig. 24)
(9) Install the generator.
(10) Install right engine mount bracket and engine
mount. (Refer to 9 - ENGINE/ENGINE MOUNTING/
RIGHT MOUNT - INSTALLATION)
Fig. 24 Generator Bracket
1 - BRACKET - ENGINE MOUNT 5 - BOLT
2 - BOLT 6 - TENSIONER - DRIVE BELT
3 - GENERATOR 7 - BOLT
4 - BOLT 8 - BOLT
RSENGINE7-31
WATER PUMP - 2.4L (Continued)
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(11) Fill the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)(12) Install the accessory drive belts. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION)
(13) Lower vehicle and connect battery cable.
WATER PUMP - 3.3/3.8L
DESCRIPTION
The water pump has a die-cast aluminum body
and a plastic impeller. It bolts directly to the timing
chain case cover, using an rubber seal for sealing
(Fig. 27). It is driven by the accessory drive belt.
OPERATION
The water pump is the heart of the cooling system.
The coolant is pumped through the engine block, cyl-
inder head, heater core, and radiator.
REMOVAL
(1) Drain the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(2) Remove the accessory drive belt shield.
(3) Remove the accessory drive belt. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL)
(4) Remove water pump pulley bolts (Fig. 27).
Fig. 25 Water Pump - 2.4L
1 - CYLINDER BLOCK
2 - WATER PUMP
Fig. 26 Water Pump Body
1 - IMPELLER
2 - PUMP BODY
3 - O-RING
Fig. 27 Water Pump - 3.3/3.8L Engine
1 - WATER PUMP
2 - PULLEY - WATER PUMP
3 - BOLT - PULLEY
4 - BOLT - WATER PUMP
5 - SEAL - WATER PUMP
7 - 32 ENGINERS
WATER PUMP - 2.4L (Continued)
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NOTE: To remove the water pump pulley, it MUST
first be positioned between water pump housing
and drive hub. The pulley can then be removed with
the water pump assembly.
(5) Rotate pulley until openings in pulley align
with water pump drive hub spokes (Fig. 28). Move
pulley inward between pump housing and hub (Fig.
28).
(6) Position pulley to allow access to water pump
mounting bolts. Remove water pump mounting bolts
(Fig. 29).
(7) Remove water pump with the pulley loosely
positioned between hub and the pump body.
(8) Remove and discard the seal.
(9) Clean seal groove and sealing surfaces on
pump and timing chain case cover. Take care not to
scratch or gouge sealing surfaces.
CLEANING
Clean gasket mating surfaces as necessary.
INSPECTION
Replace the water pump if it has any of the follow-
ing defects.
(1) Damage or cracks on the pump body.
(2) Coolant leaks; this will be evident by a wet
stream of coolant running down the pump body and
components below. A thin stain below the weep hole
reservoir slot (Fig. 30) is considered normal opera-
tion.
(3) Impeller rubs inside of chain case cover.
(4) Excessively loose or rough turning bearing.
NOTE: A weepage stain that is black, brown, or grey
is considered normal, if it is dry. If the weep
appears wet; pressure test the cooling system at15±18 psi and observe the weep area. If weep area
remains unchanged, do not replace the water pump
for this condition. Replace the water pump, if a
steady flow of engine coolant is evident from the
weep hole/reservoir slot (Fig. 30) (shaft seal failure).
Be sure to perform a thorough analysis before
replacing water pump.
INSTALLATION
(1) Install new seal into water pump housing
groove (Fig. 31).
NOTE: The water pump pulley MUST be positioned
loosely between the pump housing and drive hub
BEFORE water pump installation.
Fig. 28 Water Pump Pulley Positioning
1 - HUB - WATER PUMP
2 - PULLEY - WATER PUMP
Fig. 29 Water Pump Bolts - 3.3/3.8L Engine (Shown
Without Pulley)
1 - WATER PUMP
2 - BOLTS
Fig. 30 Water Pump Inspection - 3.3/3.8L Engine
RSENGINE7-33
WATER PUMP - 3.3/3.8L (Continued)
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(2) Position the water pump pulley loosely between
pump housing and drive hub (Fig. 28).
(3) Install water pump and pulley to the timing
chain case cover (Fig. 27). Tighten water pump bolts
to 12 N´m (105 in. lbs.).
(4) Position pulley on water pump hub. Install
bolts and tighten to 30 N´m (250 in. lbs.) (Fig. 27).
(5) Rotate pump by hand to check for freedom of
movement.
(6) Install the accessory drive belt. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
INSTALLATION)
(7) Install drive belt shield.
(8) Fill the cooling system. (Refer to 7 - COOLING
- STANDARD PROCEDURE)
WATER PUMP INLET TUBE -
2.4L
DESCRIPTION
The 2.4L engine uses a metal tube to connect the
engine block to the lower radiator hose and heater
return (Fig. 32). The tube has an O-ring for block to
tube sealing and bolts attach the tube to the engine
block.
REMOVAL
(1) Drain the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(2) Remove radiator upper hose to access the hose
connections at the inlet tube.(3) Remove radiator lower (Fig. 7) and heater
hoses from the inlet tube (Fig. 33).
(4) Remove the two fasteners that hold the inlet
tube to the block.
(5) Rotate tube while removing the tube from the
engine block (Fig. 33).
INSTALLATION
(1) Inspect the O-ring for damage before installing
the tube into the cylinder block (Fig. 32).
(2) Lube O-ring with coolant and install inlet tube
into the cylinder block opening (Fig. 32).
(3) Install the two inlet tube fasteners and tighten
to 12 N´m (105 in. lbs.).
(4) Connect the radiator lower hose and heater
hose to inlet tube.
Fig. 31 Water Pump Seal
1 - WATER PUMP HOUSING
2 - SEAL
3 - IMPELLER
Fig. 32 Water Pump Inlet TubeÐ2.4L Engine
1 - O-RING
2 - WATER PUMP INLET TUBE
Fig. 33 Water Pump Inlet Tube Hose Connections
1 - WATER PUMP INLET TUBE
2 - HOSE - HEATER RETURN
3 - COOLANT INLET
7 - 34 ENGINERS
WATER PUMP - 3.3/3.8L (Continued)
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(5) Install the radiator upper hose.
(6) Fill the cooling system. (Refer to 7 - COOLING
- STANDARD PROCEDURE)
WATER PUMP INLET TUBE -
3.3/3.8L
REMOVAL
(1) Drain the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(2) Raise vehicle on hoist and remove the belt
splash shield.
(3) Remove the radiator lower hose from inlet tube
(Fig. 34).
(4) Remove the oil cooler outlet/heater return hose
from inlet tube (only if equipped with engine oil
cooler) (Fig. 35).
(5) Remove the inlet tube bolts (Fig. 36).
(6) Remove the inlet tube (Fig. 36). Discard the
O-ring seal.
INSTALLATION
(1) Clean the inlet tube O-ring sealing surfaces on
the timing cover housing and tube.
(2) Apply MopartDielectric Grease or equivalent
to the O-ring before installation.
(3) Position new O-ring seal on inlet tube (Fig. 36).
(4) Install the inlet tube (Fig. 36). Tighten bolts to
28 N´m (250 in. lbs.).(5) Connect radiator lower hose (Fig. 34) and
heater return hose (if equipped with engine oil
cooler) (Fig. 35) to the inlet tube.
(6) Install the drive belt splash shield and lower
vehicle.
(7) Fill the cooling system. (Refer to 7 - COOLING
- STANDARD PROCEDURE)
Fig. 34 RAD HOSES TO ENGINE - 3.3/3.8L
1 - UPPER HOSE
2 - LOWER HOSE
Fig. 35 Engine Oil Cooler Hoses (Engine Oil Cooler
Equipped)
1 - OIL COOLER INLET TUBE
2 - INLET HOSE
3 - OIL COOLER OUTLET TUBE
4 - OUTLET HOSE
5 - WATER PUMP INLET TUBE
Fig. 36 WATER PUMP INLET TUBE
1 - TIMING CHAIN COVER
2 - INLET TUBE
3 - BOLT
4 - BOLT
5 - O-RING
RSENGINE7-35
WATER PUMP INLET TUBE - 2.4L (Continued)
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TRANSMISSION
TABLE OF CONTENTS
page page
TRANSMISSION
DIAGNOSIS AND TESTING.................36
TRANS OIL COOLER FLOW TESTING.......36
STANDARD PROCEDURE..................37
FLUSHING COOLERS AND TUBES.........37
TRANS COOLER
DESCRIPTION...........................38REMOVAL..............................38
CLEANING..............................38
INSPECTION............................38
INSTALLATION...........................38
TRANS COOLER LINES
REMOVAL..............................38
INSTALLATION...........................39
TRANSMISSION
DIAGNOSIS AND TESTING - TRANSMISSION
OIL COOLER FLOW
To determine proper transmission oil flow through
the oil cooler perform the following procedure:
(1) Disconnect the hose from the ªcooler returnº
fitting on the transmission. (Refer to 7 - COOLING/
TRANSMISSION/TRANS COOLER LINES -
REMOVAL)
(2) Using Special Tool adaptors 6906-1-3 with a 9
mm (3/8 in.) transmission hose attached to oneadapter, connect Special Tool 8392 flow meter in-se-
ries with the oil cooler flow circuit (Fig. 1).
(3) Start engine and run at curb idle speed.
Observe the flow meter gauge. Refer to the following
chart for specifications.
COOLER FLOW SPECIFICATION (Min.)
2.6 LPM (0.7 GPM)
(4) If oil flow is below minimum specifications, fur-
ther diagnosis must be performed.
(a) Perform Oil Pump Volume Check. (Refer to
21 - TRANSMISSION/TRANSAXLE/AUTOMATIC
Fig. 1 TRANS COOLER FLOW TEST
1 - SPECIAL TOOL 8392 4 - TRANS HOSE-9mm(3/89I.D.)
2 - SPECIAL TOOL 6906-1-3 5 - FROM COOLER
3 - TO TRANS
7 - 36 TRANSMISSIONRS
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- 31TH/OIL PUMP - STANDARD PROCEDURE)
(Refer to 21 - TRANSMISSION/TRANSAXLE/AU-
TOMATIC - 41TE/OIL PUMP - STANDARD PRO-
CEDURE)
(b) If oil pump volume is within specification, a
possible restriction in the cooler lines or cooler has
occurred.
(c) If oil pump volume is not within specification,
possible internal transmission restrictions, compo-
nent wear or damage has occurred. (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC -
31TH - DIAGNOSIS AND TESTING) (Refer to 21 -
TRANSMISSION/TRANSAXLE/AUTOMATIC -
41TE - DIAGNOSIS AND TESTING)
(d) If an oil cooler restriction is suspected, per-
form further inspections and flow meter testing by
isolating components (i.e. lines, coolers).
(e) After a restriction is isolated, perform cooler
flush procedure. (Refer to 7 - COOLING/TRANS-
MISSION - STANDARD PROCEDURE)
(f) Re-test cooler flow. If cooler flow does not
exceed minimum specification, replace compo-
nent(s) as necessary.
STANDARD PROCEDURE - FLUSHING
COOLERS AND TUBES
The recommended procedure for cooler flushing is
to use Tool 6906 Cooler Flusher.
WARNING:
WEAR PROTECTIVE EYEWEAR THAT MEETS THE
REQUIREMENTS OF OSHA AND ANSI Z87.1±1968.
WEAR STANDARD INDUSTRIAL RUBBER GLOVES.
KEEP LIGHTED CIGARETTES, SPARKS, FLAMES,
AND OTHER IGNITION SOURCES AWAY FROM THE
AREA TO PREVENT THE IGNITION OF COMBUSTI-
BLE LIQUIDS AND GASES. KEEP A CLASS (B) FIRE
EXTINGUISHER IN THE AREA WHERE THE
FLUSHER WILL BE USED.
KEEP THE AREA WELL VENTILATED.
DO NOT LET FLUSHING SOLVENT COME IN CON-
TACT WITH YOUR EYES OR SKIN: IF EYE CONTAM-
INATION OCCURS, FLUSH EYES WITH WATER FOR15 TO 20 SECONDS. REMOVE CONTAMINATED
CLOTHING AND WASH AFFECTED SKIN WITH
SOAP AND WATER. SEEK MEDICAL ATTENTION.
(1) Remove cover plate filler plug on Tool 6906.
Fill reservoir 1/2 to 3/4 full of fresh flushing solution.
Use MopartTransmission Cooler Flush (MS-552) or
equivalent solution conforming to MS-552. Flushing
solvents are petroleum based solutions generally
used to clean automatic transmission components.
DO NOTuse solvents containing acids, water, gaso-
line, or any other corrosive liquids.
(2) Reinstall filler plug on Tool 6906.
(3) Verify pump power switch is turned OFF. Con-
nect red alligator clip to positive (+) battery post.
Connect black (-) alligator clip to a good ground.
NOTE: When flushing transmission cooler and
lines, ALWAYS reverse flush.
(4) Connect the BLUE pressure line to the OUT-
LET (From) cooler line.
(5) Connect the CLEAR return line to the INLET
(To) cooler line
(6) Turn pump ON for two to three minutes to
flush cooler and lines.
(7) Turn pump OFF.
(8) Disconnect CLEAR suction line from reservoir
at cover plate. Disconnect CLEAR return line at
cover plate, and place it in a drain pan.
(9) Turn pump ON for 30 seconds to purge flush-
ing solution from cooler and lines. Turn pump OFF.
(10) Place CLEAR suction line into a one quart
container of MopartATF+4 (Automatic Transmission
FluidÐType 9602).
(11) Turn pump ON until all transmission fluid is
removed from the one quart container and lines. This
purges any residual cleaning solvent from the trans-
mission cooler and lines. Turn pump OFF.
(12) Disconnect alligator clips from battery. Recon-
nect flusher lines to cover plate, and remove flushing
adapters from cooler lines.
RSTRANSMISSION7-37
TRANSMISSION (Continued)
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