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ENGINE COOLING (X22SE 2.2L) 6B–4 Diagnosis Engine Cooling Trouble Condition Possible cause Correction Engine overheating Low Engine Coolant level Replenish Thermo mater unit faulty Replace Faulty thermostat Replace Faulty Engine Coolant temperature Repair or replace Clogged radiator Clean or replace Faulty radiator cap Replace Low engine oil level or use of Replenish or change oil Clogged exhaust system Clean exhaust system or replace Faulty Throttle Position sensor Replace throttle valve assembly Open or shorted Throttle Position Repair or replace Damaged cylinder head gasket Replace Engine overcooling Faulty thermostat Replace Engine slow to warm–up Faulty thermostat Replace Thermo unit faulty Replace Draining and Refilling Cooling Before draining the cooling system, inspect the system 1. Completely drain the cooling system by opening the drain plug at the bottom of the radiator. 2. Remove the radiator cap. WARNING: TO AVOID THE DANGER OF BEING 3. Disconnect all hoses from the EC reserve tank. Scrub and clean the inside of the reserve tank with 4. Refill the cooling system with the EC using a solution that is at least 50 percent antifreeze but no more than 5. Fill the radiator to the base of the filler neck. Fill the EC reserve tank to “MAX” line when the engine 6. Block the drive wheels and firmly apply the parking brake. Shift an automatic transmission to “P” (Park) 7. Remove the radiator cap. Start the engine and warm it up at 2,500 ∼ 3,000 rpm for about 30 minutes. 8. When the air comes out from the radiator filler neck and the EC level has gone down, replenish with the 9. After the engine has cooled, replenish with EC up to the “MAX” line of the reserve tank. 10. Start the engine. With the engine running at 3,000 rpm, make sure there is no running water sound from 11. If the running water sound is heard, repeat steps 8 to 10. |