Pinpoint Test C : The Engine Does Not Reach Normal Operating Temperature
WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.
- C1 CARRY OUT INSPECTION AND VERIFICATION
- Carry out the inspection and verification procedure in this article.
Were any concerns found?
Yes REPAIR as needed. No GO to C2. - C2 CHECK FOR DTC P0125 or P0128
- Check for DTC P0125 or P0128.
Is DTC P0125 or P0128 present?
Yes GO to C3. No The cooling system is operational. If an inoperative engine coolant temperature gauge is suspected, CHECK the engine coolant temperature gauge operation. REFER to Instrumentation, Message Center, and Warning Chimes . If an inoperative climate control system is suspected, CHECK the climate control system operation. REFER to Climate Control System General Information . If any other PCM DTCs are retrieved, REFER to Electronic Engine Controls . - C3 CHECK THE COOLANT LEVEL
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NOTE: Allow the engine to cool before checking the coolant level.
Visually check the engine coolant level in the coolant expansion tank.
Is the engine coolant level within specification?
Yes INSTALL a new thermostat. Thermostat CLEAR Diagnostic Trouble Codes (DTCs). If the DTC returns check for correct CHT sensor operation. No GO to Pinpoint Test A to diagnose a coolant leak. -