For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Check the coolant level and mixture. Is the coolant mixed properly and at the proper level? | -- | Go to Step 2 | Add coolant.
2 | Check the generator/coolant pump drive belt. Is the generator/coolant pump drive belt loose or missing? | --- | Adjust or replace the belt. | Go to Step 3
3 | Inspect the front of the radiator. Are there dirt, leaves, insects on the front of the radiator? | -- | Clean the front of the radiator. | Go to Step 4
4 | Is there leakage in the following areas?

• | Hoses

• | Coolant Pump

• | Heater

• | Thermostat Housing

• | Radiator

• | Core plugs

• | Head gaskets

--

Repair as necessary.

Go to Step 5

5 | Check the thermostat. Is the thermostat faulty? | -- | Replace the thermostat. | Go to Step 6
6 | Check the ignition timing. Is the ignition timing retarded? | -- | Set the timing. | Go to Step 7
7 | Check the cylinder head torque. Is the cylinder head torque incorrect? | -- | Re-tighten the cylinder head bolts to specification. Refer to Cylinder Head Replacement in Engine Mechanical--1.6 Liter L4. Replace the cylinder head gasket if required. | Go to Step 8
8 | Check the intake manifold. Is the intake manifold leaking? | -- | Repair the intake manifold or replace components as necessary to correct the leak. | Go to Step 9
9 | Check the cylinder head gasket. Is the cylinder head gasket leaking? | -- | Make repairs or replace components as necessary to correct the leak. | Go to Step 10
10 | Check the cylinder block plug. Is the cylinder block plug leaking? | -- | Make repairs or replace components as necessary to correct the leak. | Go to Step 11
11 | Check the heater core. Is the heater core leaking? | -- | Make repairs or replace components as necessary to correct the leak. | Go to Step 12
12 | Check the coolant valve. Is the coolant valve leaking (if equipped)? | -- | Make repairs or replace components as necessary to correct the leak. | --