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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Secondary Engine Cooling System (Diesel)) >> Diagnosis And Testing >> Powertrain Secondary Cooling System >> Pinpoint Tests >> Pinpoint Test A: Loss of Coolant >> Pinpoint Test A: Loss Of Coolant

Pinpoint Test A: Loss Of Coolant

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. 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.
  1. A1 CARRY OUT INSPECTION AND VERIFICATION 
    • Yes  : REPAIR as needed. TEST the system for normal operation.
    • No  : GO to A2.
  2. A2 CHECK THE COOLANT LEVEL 
    NOTE: Allow the engine to cool before checking the coolant level.
    • Ignition OFF.
    • Visually inspect the coolant level at the degas bottle.
    • Is the coolant level within specifications? 
    • Yes  : GO to A3.
    • No  : ADJUST the coolant level as necessary. GO to A3.
  3. A3 PRESSURE TEST THE POWERTRAIN SECONDARY COOLING SYSTEM 
    • Yes  : REPAIR or INSTALL new components. TEST the system for normal operation.
    • No  : GO to A4.
  4. A4 CHECK THE COOLANT FOR TRANSMISSION FLUID 
    • Inspect the coolant in the degas bottle for signs of transmission fluid.
    • Is transmission fluid evident in the coolant? 
  5. A5 CHECK THE TRANSMISSION FLUID FOR COOLANT 
    • Remove the transmission fluid level indicator.
    • Is coolant evident in the transmission fluid? 
  6. A6 CHECK THE COOLANT FOR FUEL 
    • Inspect the coolant in the degas bottle for signs of fuel.
    • Is fuel evident In the coolant? 
  7. A7 CHECK FOR COOLANT IN THE FUEL 
    • Drain the fuel from the fuel conditioning module and check for coolant in the fuel.
    • Is coolant evident in the fuel? 
  8. A8 CHECK THE CAC FOR AN INTERNAL LEAK 
  9. A9 CHECK THE EGR COOLER FOR AN INTERNAL LEAK 
    • Yes  : REPAIR the EGR cooler as necessary. REFER to ENGINE EMISSION CONTROL . TEST the system for normal operation.
    • No  : The cooling system is operational.
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