Chrysler 1998 Voyager Service Manual page 227

NS
DIAGNOSIS AND TESTING (Continued)
CONDITION - AND CHECKS
Inadequate Air Conditioning Performance - Cooling System Suspected
(1) Check for plugged air side of condenser and
radiator front and rear.
(2) Assure fan runs whenever A/C head pressure
exceeds 1724 kPa (250 psi).
(3) Check for missing air seals-recirculating air path.
(4) Assure correct cooling system parts.
Battery Dead - Suspect Fan Current Draw as Cause
(1) With a good, fully charged battery.
Hot Smell - Suspect Cooling System
(1) Was temperature gauge high?
(2) Heat shields all in place?
(3) Fan control operating properly?
(4) Heat exchanger air side plugged?
(5) Engine missing or running rich?
Poor Driveability - Suspect Failed Open Thermostat.
(1) Check diagnostics - is code 17 set? (Engine too
cold for too long)
Poor Heater Performance - Suspect Failed Open Thermostat
(1) Does gauge read low?
(2) Check coolant level.
(3) Check diagnostics - is code 17 set? (Engine too
cold for too long)
Steaming, Observe Water Vapor Through Grill or Head Gap at Standstill at Idle - In Wet Weather
(1) This is normal. It is moisture, snow, or water on the
outside of the radiator that evaporates when the
thermostat opens to put hot coolant into the radiator.
This usually occurs in cold weather with no fan or air
flow to blow it away.
DIAGNOSIS
(1) Wash out with low-velocity water.
(2) Repair as necessary.
(1) a - Assure fan control is operating properly.
(1) b - See charging system in Electrical, Group 8B.
(1) a - Yes, See Gauge Reads High
(1) b - No. See 2, 3, 4, and 5.
(2) a - Yes, See 3, 4, and 5.
(2) b - Repair or replace heat shields.
(3) a - Yes, See 4 and 5.
(3) b - No, See Radiator Fan Control this section.
(4) Clean as required.
(5) Repair as required.
(1) If yes, change thermostat.
(1) See 3
(2) See 3
(3) If yes, change thermostat. If no, check heater
bypass valve, which should be closed except in Max
A/C or off mode; if not, see Heater and Air Conditioning
Group, 24.
(1) Normal condition - no service required.
COOLING SYSTEM 7 - 13