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HOMESERVICE MANUALSFORD2004ECONOLINE E150, VAN CARGO, 4.6 WREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - SYMPTOM CHARTS - CNG, FLEX-FUEL & GASOLINEQT: STEP 1: PCM QUICK TESTQT1 PERFORM PCM QUICK TEST
2004 Ford Econoline E150, Van Cargo, 4.6 W

Qt1 Perform Pcm Quick Test

2004 Ford Econoline E150, Van Cargo, 4.6 WSECTION Qt1 Perform Pcm Quick Test
NOTE: If the vehicle was brought in with an emission compliance failure symptom, GO to M: Emission Compliance STEP EM1.
  • Complete preliminary checks looking for obvious concerns that may relate to the symptom. Check items such as those listed:
    • Related electrical connectors or fuses
    • Vacuum lines (leaks, routing)
    • Air intake system (leaks, restrictions)
    • Fuel quality (octane, contamination, winter/summer blend)
    • Cooling system (engine operating at proper temperature)
  • Access any related TSB information (if available).
  • Complete PCM Quick Test to access any DTCs. Note any Key On Engine Off, Key On Engine Running (if engine runs) and Continuous Memory (MIL and non-MIL) DTCs.
NOTE: If unable to access DTCs, or any scan tool communication concern exists, GO to A: Unable to Activate Self-Test/Network Communication Error/DTC P1001 STEP QA1. For additional information on retrieving MIL and non-MIL DTCs, refer to CONTINUOUS MEMORY SELF-TEST .

Were any DTCs present?  

Yes No
If engine runs rough at idle and Key On Engine Running or Continuous Memory DTC(s) are present:
GO to Quick Test QT2  to check injector fault PIDS.
All Others:
GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS for direction to service DTC(s) after noting the following:
Service DTCs in the following order (begin diagnosis with the first DTC output in that mode).
  1. Any KOEO DTC(s)
  2. Any KOER DTC(s)
  3. Any Continuous Memory DTC(s) (retrieve any available Freeze Frame Data) (disregard any identical/related Continuous DTC(s) of DTC(s) already serviced).
 GO to STEP 2: NO DTC(S) PRESENT SYMPTOM CHART INDEX  for direction to proper STEP 3 Chart.
NOTE: If symptom is not listed, REFER to applicable article or GO to Z: Intermittent STEP Z1.
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.