Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Check the coolant level in the coolant recovery reservoir. Refer to Cooling System Maintenance Recommendations . Is the coolant at the proper level? | -- | ||
2 | Add coolant to the coolant recovery reservoir as necessary. Does the engine still fail to reach normal operating temperature? | -- | System OK | |
3 | Check for a blockage in the coolant passages. Are there any blockages in the coolant passages? | -- | ||
4 | Flush the cooling system or flow check the radiator. Refer to Flushing . Does the engine still fail to reach normal operating temperature? | -- | System OK | |
5 | Check to see if the incorrect type of thermostat was installed, or if the thermostat is stuck (or sticks) in the open position. Refer to Thermostat Diagnosis . Was the incorrect thermostat installed, or is the thermostat stuck (or does the thermostat stick) in the open position? | -- | -- | |
6 | Replace the thermostat.
Does the engine still reach normal operating temperature? | -- | -- | System OK |
