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7 - 16
ENGINE
ENGINE (Continued)
CONDITION
POSSIBLE CAUSE
6. Poor seals at pressure cap.
7. Wrong pressure cap installed.
8. 2.0L/2.4L Vehicles: Coolant level
low in radiator, but not in coolant
recovery container. This indicates
the radiator is not drawing coolant
from the coolant recovery container
as the engine cools. As the engine
cools, a vacuum is formed inside
the cooling system. If the radiator
cap seals are defective, or the
cooling system has a leak, a
vacuum cannot be formed.
9. Freeze point of coolant not
correct. Mixture ratio may be too
rich.
10. Coolant not flowing through
system.
11. Radiator or A/C condenser fins
are dirty or clogged.
12. Radiator core is plugged or
corroded.
13. Fuel or ignition system
problems.
CORRECTION
6. (a) Check condition of cap and
cap seals. (Refer to 7 - COOLING/
ENGINE/RADIATOR PRESSURE
CAP - INSPECTION) Replace cap if
necessary.
(b) Check condition of filler neck. If
neck is damaged, replace as
necessary.
7. Vehicles equipped with 2.0L/2.4L
engines use different pressure caps
than vehicles equipped with 2.7L
engines. Verify proper pressure cap
part number.
8. (a) Check condition of pressure
cap and seals. Replace cap if
necessary.
(b) Check condition of filler neck.
Replace if damaged.
(c) Check condition of hose from
filler neck to coolant container. It
should be tight at both ends without
any kinks or tears. Replace hose as
necessary.
(d) Check coolant recovery
container and hose for blockage.
Repair as necessary.
9. Check coolant concentration.
(Refer to 7 - COOLING/ENGINE/
COOLANT - DIAGNOSIS AND
TESTING) Adjust glycol-to-water
ratio as required.
10. (a) 2.0L/2.4L Vehicles: Check
for coolant flow at filler neck with
some coolant removed, engine
warm, and thermostat open. Coolant
should be observed flowing through
filler neck. If flow is not observed,
determine reason for lack of flow
and repair as necessary.
(b) 2.7L Vehicles: Engine coolant
motion should be observable in
coolant pressure container when
revving the engine while running.
11. Clean obstruction from fins.
12. Clean or replace radiator as
necessary.
13. (Refer to the Appropriate
Diagnostic Information)
JR
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