Chrysler Stratus Convertible. Manual — part 224
COOLING SYSTEM PRESSURE CAP
Dip the pressure cap in water; clean off any depos-
its on the vent valve or its seat, and apply the cap to
end of radiator pressure tester (Fig. 12). Working the
plunger, increase the pressure to 104 kPa (15 psi) on
the gauge. If the pressure cap fails to hold pressure
of at least 97 kPa (14 psi), replace the cap.
CAUTION: The radiator pressure tester is very sen-
sitive to small air leaks that will not cause cooling
system problems. A pressure cap that does not
have a history of coolant loss should not be
replaced just because it leaks slowly when tested
with this tool. Add water to the tool. Turn the tool
upside down, and recheck the pressure cap to con-
firm that the cap is faulty.
If the pressure cap tests properly while posi-
tioned the on radiator pressure tester, but will not
hold pressure or vacuum when positioned on the
filler neck, inspect the filler neck and cap top gas-
ket for irregularities that may prevent the cap from
sealing properly.
LOW COOLANT LEVEL AERATION
Low coolant level in a cross flow radiator will
equalize in both tanks with engine off. With engine
at running operating temperature the high pressure
inlet tank runs full and the low pressure outlet tank
drops. If this level drops below the top of the trans-
mission oil cooler, air will be sucked into the water
pump:
• Transmission oil will become hotter.
• High reading shown on the temperature gauge.
• Air in the coolant will also cause loss of flow
through the heater.
• Exhaust gas leaks into the coolant can also
cause the same problems.
COOLING SYSTEM DEAERATION
Air can only be removed from the system by gath-
ering under the pressure cap. On the next heat up it
will be pushed past the pressure cap into the coolant
recovery container by thermal expansion of the cool-
ant. It then escapes to the atmosphere in the coolant
recovery container and is replaced with coolant on
cool down.
TRANSAXLE OIL COOLER FLOW CHECK
Refer to TRANSAXLE—Oil Cooler Flow Check for
procedure.
ACCESSORY DRIVE BELT
Satisfactory performance of the belt driven accesso-
ries depends on belt condition and proper belt ten-
sion.
ACCESSORY DRIVE BELT DIAGNOSIS
CONDITION
POSSIBLE CAUSE
CORRECTION
INSUFFICIENT ACCESSORY
OUTPUT DUE TO BELT SLIPPAGE
1. Belt too loose.
1. Adjust belt tension.
2. Belt excessively glazed or worn.
2. Replace and tighten as specified.
BELT SQUEAL WHEN
ACCELERATING ENGINE
1. Belts too loose.
1. Adjust belt tension.
2. Belts glazed.
2. Replace belts.
Fig. 12 Pressure Testing Radiator Cap
1 – PRESSURE CAP
2 – PRESSURE TESTER
JX
COOLING SYSTEM
7 - 15
DIAGNOSIS AND TESTING (Continued)
CONDITION
POSSIBLE CAUSE
CORRECTION
BELT CHIRP AT IDLE
1. Belts too loose.
1. Adjust belt tension.
2. Foreign material imbedded in
belt.
2. Replace belt.
3. Non-uniform belt.
3. Replace belt.
4. Misaligned pulley(s).
4. Align accessories.
5. Non-uniform groove or eccentric
pulley.
5. Replace pulley(s).
BELT ROLLED OVER IN GROOVE
OR BELT JUMPS OFF
1. Broken cord in belt.
1. Replace belt.
2. Belt too loose, or too tight.
2. Adjust belt tension.
3. Misaligned pulleys.
3. Align accessories.
4. Non-uniform grooves or eccentric
pulley.
4. Replace pulley(s).
ENGINE BLOCK HEATER
If unit does not operate, trouble can be in either
the power cord or the heater element. Test power
cord for continuity with a 110-volt voltmeter or 110-
volt test light; test heater element continuity with an
ohmmeter or 12-volt test light.
SERVICE PROCEDURES
COOLANT LEVEL CHECK—ROUTINE
Do not remove radiator cap for routine cool-
ant level inspections.
The coolant reserve system provides a quick visual
method for determining the coolant level without
removing the radiator cap. With the engine cold
and not running, simply observe the level of the
coolant in the reserve tank. The level should be
between the minimum and maximum marks.
COOLANT—ADDING ADDITIONAL
NOTE: The radiator cap should not be removed.
When additional coolant is needed, it should be
added to the coolant recovery/reserve container (Fig.
13). Use only 50/50 concentration of ethylene glycol
type antifreeze and water
COOLANT LEVEL SERVICING—2.0L ENGINE
NOTE: The cooling system is closed and designed
to maintain coolant level to the top of the radiator.
When servicing requires a coolant level check in
the radiator, the engine must be off and not under
pressure. Drain several ounces of coolant from the
radiator drain cock while observing the Coolant
Recovery Container. Coolant level in the container
should drop slightly. Then remove the radiator cap
(Fig. 13). The radiator should be full to the top. If
not, and the coolant level in the recovery container is
at the ADD mark there is a air leak in the recovery
system. Check hose or hose connections to the recov-
ery container, radiator filler neck or the pressure cap
seal to the radiator filler neck for leaks.
COOLING SYSTEM—DRAINING
NOTE: Drain, flush, and fill the cooling system at
the mileage or time intervals specified in the Group
0, Lubrication and Maintenance. If the solution is
dirty, rusty or contains a considerable amount of
sediment, clean and flush with a reliable cooling
system cleaner. Care should be taken in disposing
of the used engine coolant. Check governmental
regulations for disposal of used engine coolant.
WARNING: DO NOT REMOVE THE COOLING SYS-
TEM PRESSURE CAP OR OPEN THE RADIATOR
DRAINCOCK, WHEN SYSTEM IS HOT AND UNDER
PRESSURE
BECAUSE
SERIOUS
BURNS
FROM
COOLANT CAN OCCUR.
To drain cooling system move temperature selector
for heater to full heat with engine running (to pro-
vide vacuum for actuation). Without removing
radiator pressure cap and with system not
under pressure, Shut engine off and open draincock
(Fig. 14). The coolant reserve tank should empty
first, then remove radiator pressure cap. (if not, see
Testing Cooling System for leaks).
7 - 16
COOLING SYSTEM
JX
DIAGNOSIS AND TESTING (Continued)
NOTE: To open draincock on vehicle equipped with
2.5L engine, use a 3/8 inch drive extension 3” long,
a 19mm socket with universal.
COOLING SYSTEM—REFILLING
First clean system to remove old glycol, see Cooling
System Cleaning.
Fill system with 50/50 glycol/water mix. Use anti-
freeze described in Coolant section. The thermostat
in the these engines allow air to flow through them.
Continue filling system until full, this provides bet-
ter heater performance. Be careful not to spill
coolant on drive belts or the generator.
Fill coolant recovery/reserve container to at least the
FULL HOT mark with 50/50 glycol/water mix, (Fig.
13). It may be necessary to add coolant to the recovery/
reserve container to maintain coolant level between
the FULL HOT and ADD mark after three or four
warm-up/cool down cycles and also, if any trapped air
that has been removed from cooling system.
REMOVAL AND INSTALLATION
WATER PUMP—2.0L ENGINES
REMOVAL
(1) Raise vehicle on a hoist. Remove right inner
splash shield.
(2) Remove accessory drive belts and power steer-
ing pump. Refer to Accessory Drive Belt service in
this section.
(3) Drain cooling system. Refer to Cooling System
Draining in this section.
(4) Support engine from the bottom and remove
right engine mount.
(5) Remove right engine mount bracket.
(6) Remove timing belt, camshaft sprockets, and
rear timing belt cover. Refer to ENGINE for proce-
dures.
(7) Remove water pump attaching screws to engine
(Fig. 15).
INSTALLATION
(1) Install new O-ring gasket in water pump body
O-ring groove (Fig. 16).
CAUTION: Make sure O-ring is properly seated in
water pump groove before tightening screws. An
improperly located O-ring may cause damage to the
O-ring and cause a coolant leak.
Fig. 13 Coolant Recovery Container and Pressure Cap Locations—2.0L Engine
1 – COOLANT RECOVERY CONTAINER
2 – ENGINE OIL FILL
3 – ENGINE OIL DIPSTICK
4 – COOLANT PRESSURE CAP
Fig. 14 Draincock—Typical
1 – DRAIN COCK BODY
JX
COOLING SYSTEM
7 - 17
SERVICE PROCEDURES (Continued)
(2) Assemble pump body to block and tighten
screws to 12 N·m (105 in. lbs.) (Fig. 15). Pressurize
cooling system to 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 rear timing belt cover, camshaft sprock-
ets, and timing belt. Refer to ENGINE for proce-
dures.
(5) Install right engine mount bracket and engine
mount. Refer to ENGINE for procedure.
(6) Fill cooling system. Refer to procedure in this
section.
(7) Install power steering pump and accessory
drive belts. Refer to Accessory Drive Belts, in this
section.
WATER PUMP INLET TUBE—2.0/2.4L
ENGINES
REMOVAL
(1) Drain cooling system. Refer to procedure in
this section.
(2) Remove upper radiator hose to access the hose
connections at the inlet tube.
(3) Remove lower radiator hose and heater hose
from the inlet tube (Fig. 17).
(4) Remove the 2 fasteners from that hold the inlet
tube to the block.
(5) Rotate inlet tube while removing from the
engine block (Fig. 18).
INSTALLATION
(1) Inspect the O-ring for damage before installing
the tube into the cylinder block (Fig. 18).
(2) Lube O-ring with coolant and install into the
cylinder block opening.
(3) Install 2 fasteners and tighten to 12 N·m (105
in. lbs.).
(4) Connect lower radiator hose and heater hose to
inlet tube (Fig. 17).
(5) Install upper radiator hose.
(6) Fill cooling system. Refer to procedure in this
section.
THERMOSTAT—2.0L ENGINE
REMOVAL
(1) Drain cooling system to the thermostat level or
below.
(2) Remove coolant recovery system (CRS) hose
and thermostat/engine outlet connector bolts (Fig.
19).
(3) Remove thermostat assembly, and clean sealing
surfaces.
Fig. 15 Water Pump
1 – CYLINDER BLOCK
2 – PUMP BODY
Fig. 16 Water Pump Body
1 – IMPELLER
2 – PUMP BODY
3 – O-RING
Fig. 17 Water Pump Inlet Tube Hose Connections
1 – TO HEATER CORE
2 – WATER PUMP INLET TUBE
3 – TO RADIATOR INLET
7 - 18
COOLING SYSTEM
JX
REMOVAL AND INSTALLATION (Continued)
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