Engine Fails To Reach Normal Operating Temperature
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Check the level of the coolant in the coolant surge tank. Is the coolant in the surge tank at the proper level? |
Go to Step 3 | Go to Step 2 |
| 2 | Add engine coolant as necessary. Refer to Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) . Does the engine still fail to reach normal operating temperature? |
Go to Step 3 | System OK |
| 3 | Check if the thermostat is stuck open. Is the thermostat stuck in the open position? |
Go to Step 5 | Go to Step 4 |
| 4 | Check to see if the correct type of thermostat was installed. Was the incorrect thermostat installed? |
Go to Step 5 | System OK |
| 5 | Replace the thermostat. Refer to Engine Coolant Thermostat Replacement . Does the engine still fail to reach normal operating temperature? |
- | System OK |