For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Check for leaking lower radiator hoses. Refer to Cooling System Maintenance Recommendations . Are the lower radiator hoses leaking or the connections loose. | -- | Go to Step 2 | Go to Step 3
2 | Tighten the loose lower radiator hose clamps. Replace the rotted lower radiator cooling hose. | -- | Go to Step 3 | System OK
3 | Check for a faulty radiator filler cap. Refer to Radiator Cap . Is the filler cap sealing and operating properly? | -- | Go to Step 4 | Go to step 5
4 | Check for a leaking coolant recovery hose or reservoir. Refer to Cooling System Diagnosis . Is the reservoir or the hose leaking? | -- | Go to Step 5 | Go to Step 6
5 | Replace the defective coolant recovery hose or reservoir. | -- | Go to Step 6 | System OK
6 | Check for improper cylinder head bolt torque. Refer to Fastener Tightening Specifications in Engine Mechanical. Are the cylinder head bolts torqued to specifications? | -- | Go to Step 8 | Go to Step 7
7 | Torque the cylinder head bolts to specifications. | -- | Go to Step 7 | System OK
8 | Check for a leaking coolant pump gasket. Refer to Cooling System Diagnosis . Is the coolant pump gasket leaking? | -- | Go to Step 9 | Go to Step 10
9 | Replace the coolant pump gasket. | -- | Go to Step 10 | System OK
10 | Check for a leaking coolant pump seal. Refer to Cooling System Diagnosis . Is the coolant pump seal leaking? | -- | Go to Step 11 | Go to Step 12
11 | Replace the coolant pump. | -- | Go to Step 12 | System OK
12 | Is the radiator leaking? Refer to Radiator Diagnosis . Check for a leaking radiator. | -- | Go to Step 13 | Go to Step 14
13 | Replace the radiator. | -- | Go to Step 14 | System OK
14 | Check for a leaking intake manifold gasket. Refer to Intake Manifold Replacement in Engine Mechanical. Is the intake manifold gasket leaking? | -- | Go to Step 15 | Go to Step 16
15 | Replace the intake manifold gasket. Refer to Intake Manifold Replacement in Engine Mechanical. | -- | Go to Step 16 | System OK
16 | Check for a leaking cylinder head gasket. Refer to Cylcinder Head Replacement in Engine Mechanical. Is the cylinder head gasket leaking? | -- | Go to Step 17 | --
17 | Replace the cylinder head gasket. | -- | -- | System OK