Inspection Procedure 2
INSPECTION PROCEDURE 2: Engine OverheatingDIAGNOSIS
STEP 1. Remove the radiator cap and check for coolant contamination.
Q: Is the coolant contaminated with rust and oil?
YES: Replace it. Go to Step 6.
NO: There is no action to be taken Go to Step 2
STEP 2. Check radiator clog.
Q: Is the radiator clogged?
YES: Clean or replace the radiator. Go to Step 6.
NO: Go to Step 3.
STEP 3. Check the radiator cap valve opening pressure.
NOTE: Be sure that the cap is clean before testing, since rust or other foreign material on the cap seal will cause an improper reading.
1) Use a cap adapter to attach the cap to the tester.
2) Increase the pressure until the gauge indicator stops moving.
Minimum limit: 83 kPa (12 psi)
Standard value: 93 - 123 kPa (14 - 18 psi)
Q: Does the reading remain at or above the minimum limit?
YES: Go to Step 4.
NO: Replace the radiator cap. Go to Step 6.
STEP 4. Check thermostat operation.
Q: Does the thermostat operating correctly?
YES: Go to Step 5. <2.4L Engine> or go to Step 6. <3.0L Engine>
NO: Replace the thermostat. Go to Step 6.
STEP 5. Check the drive belt for slippage or damage. <2.4L Engine>
Q: Is the drive belt loose or damaged?
YES: Adjust or replace the drive belt. Go to Step 6.
NO: There is no action to be taken.
STEP 6. Retest the system. Check the coolant temperature gauge.
Q: Is the coolant temperature abnormally high?
YES: Return to Step 3.
NO: This procedure is complete.