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HOMESERVICE MANUALSMERCURY2009MOUNTAINEER 4.6 8, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONOBD-II DRIVE CYCLES2003-07 6.0L DIESELDRIVE CYCLE PROCEDURE
2009 Mercury Mountaineer 4.6 8, RWD

Drive Cycle Procedure

2009 Mercury Mountaineer 4.6 8, RWDSECTION Drive Cycle Procedure
  1. Key ON. Do not crank until the WAIT TO START light cycles, or at least 10 seconds, whichever occurs first.
  2. Start the engine. Idle in PARK or NEUTRAL for 40 seconds.
  3. Before continuing, engine oil temperature (EOT) must exceed 60°C (140°F).
  4. The following outlines the appropriate conditions for running certain OBD monitors that require the engine to be under load:
    1. Accelerate steadily to third gear (M/T use fourth gear) and hold at 1,500 RPM for 3 seconds. Accelerate steadily from 56 km/h (35 mph) to 105 km/h (65 mph) over approximately 15 seconds (M/T 11 seconds minimum).
    2. Repeat Step  a three times while maintaining the conditions in Step  a
    3. Before proceeding, turn all accessories off and disengage tow/haul/overdrive cancel.
  5. Idle the vehicle for 20 seconds in PARK or NEUTRAL.
  6. Key OFF.
  7. Start the engine. Idle in PARK or NEUTRAL for 40 seconds.
  8. Repeat the Quick Test.
NOTE: If P1000 is present after running the drive cycle:
  • Repeat Step  a, being certain to maintain a minimum mass fuel desired (MFDES) of 35 mg/stroke above 2,000 RPM for 11 seconds. Also, maintain a minimum MFDES of 30 mg/stroke above 2,800 RPM for at least 6 seconds.
  • Repeat Step  8 MFDES must remain below 12 mg/stroke for 11 consecutive seconds.
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.