Test Procedure

2021 Ford Transit-350 XL, 3.5L Eng VIN G, RWDSECTION Test Procedure
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  1. DX1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) 

    Are DTCs P0116, P0117, P0118, P0119, P011E, P0125, P0128, P1117, or P111B present? 

    Yes No
    For DTCs P0125, P0128 or P111B, GO to  DX10.
    For all others, GO to  DX2.
    For symptoms without DTCs, GO to  DX2.
    For all others, RETURN to SYMPTOM CHARTS for further direction.
  2. DX2 CHECK THE COOLING SYSTEM 
    WARNING: TO AVOID PERSONAL INJURY DO NOT UNSCREW THE COOLANT PRESSURE RELIEF CAP WHILE THE ENGINE IS OPERATING OR 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 PERSONAL INJURY.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.