Engine Fails To Reach Normal Operating Temperature. Opel Sintra 1997

For 1990-2009 cars

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

6

Replace the thermostat.

1. 3400 engine, refer to Engine Coolant Thermostat Replacement Thermostat Replacement.

Does the engine still reach normal operating temperature?

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System OK