Chrysler 1997 Stratus Convertible RHD Service Manual page 200

7 - 14 COOLING SYSTEM
DIAGNOSIS AND TESTING (Continued)
CONDITION
HEAT ODOR - CONT.
POOR DRIVEABILITY
(THERMOSTAT POSSIBLY STUCK
OPEN). GAUGE MAY BE READING
LOW
STEAM IS COMING FROM FRONT
OF VEHICLE NEAR GRILL AREA
WHEN WEATHER IS WET,
ENGINE IS WARMED UP AND
RUNNING, AND VEHICLE IS
STATIONARY. TEMPERATURE
GAUGE IS IN NORMAL RANGE
COOLANT COLOR
COOLANT LEVEL CHANGES IN
COOLANT RESERVE/OVERFLOW
TANK. TEMPERATURE GAUGE IS
IN NORMAL RANGE
COOLING SYSTEM DIAGNOSIS CONT.
POSSIBLE CAUSES
2. Is temperature gauge reading
above the normal range?
3. Is cooling fan operating
correctly?
4. Has undercoating been applied
to any unnecessary component?
5. Engine may be running rich
causing the catalytic convertor to
overheat.
1. For proper driveability, good
vehicle emissions and for
preventing build-up of engine oil
sludge, the thermostat must be
operating properly. Has a diagnostic
trouble code (DTC) number 17
been set?
1. During wet weather, moisture
(snow, ice or rain condensation) on
the radiator will evaporate when the
thermostat opens. This opening
allows heated water into the
radiator. When the moisture
contacts the hot radiator, steam
may be emitted. This usually occurs
in cold weather with no fan or
airflow to blow it away.
1. Coolant color is not necessarily
an indication of adequate corrosion
or temperature protection. Do not
rely on coolant color for determining
condition of coolant.
1. Level changes are to be
expected as coolant volume
fluctuates with engine temperature.
If the level in the tank was between
the FULL and ADD marks at normal
engine operating temperature, the
level should return to within that
range after operation at elevated
temperatures.
CORRECTION
2. Refer to the previous
Temperature Gauge Reads High in
these Diagnosis Charts. Repair as
necessary.
3. Refer to Cooling System Fan in
this group for diagnosis. Repair as
necessary.
4. Clean undercoating as necessary.
5. Refer to On-Board Diagnostics in
Group 25. DTC's may also be
checked using the DRB scan tool.
Refer to the proper Powertrain
Diagnostics Procedures manual for
checking the thermostat using the
DRB scan tool. Replace thermostat
if necessary.
1. Refer to On-Board Diagnostics in
Group 25. DTC's may also be
checked using the DRB scan tool.
Refer to the proper Powertrain
Diagnostics Procedures manual for
checking the thermostat using the
DRB scan tool. Replace thermostat
if necessary.
1. Occasional steam emitting from
this area is normal. No repair is
necessary.
1. Check the freeze point of the
coolant. Refer to Coolant in the
group for test procedure. Adjust the
glycol to water ratio as required.
1. A normal condition. No repair is
necessary.
JX