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HOMESERVICE MANUALSFORD2005TAURUS SEL, 4D SEDANREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - PINPOINT TEST HG: POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM THROUGH PINPOINT TEST JD: CRANKSHAFT POSITION (CKP) SENSOR - (EXCEPT DIESEL & HYBRID)PINPOINT TEST HU: INTAKE AIR SYSTEMSTEST PROCEDURE
2005 Ford Taurus SEL, 4D Sedan

Test Procedure

2005 Ford Taurus SEL, 4D SedanSECTION Test Procedure
  1. HU1 PART THROTTLE SYMPTOM 

    Are any part throttle concerns present? 

    Yes No
    GO to  HU6. GO to  HU2.
  2. HU2 CHECK THE BASE IDLE SPEED 
    NOTE: The vehicle must be at operating temperature and at idle for a minimum of 1 minute.
    • Key on engine running.
    • Determine if the idle speed is incorrect. Refer to the REFERENCE VALUE SYMPTOM CHART if necessary.
    • Access the PCM and monitor the RPM PID.
    • If equipped, read the vehicle tachometer.

    Is vehicle idle speed correct? 

    Yes No
    GO to  HU4. Key in OFF position.
    GO to  HU3.
  3. HU3 CHECK THE BASE IDLE SPEED 
    • Check that the throttle arm contacts the return stop.

    Is the idle speed high? 

    Yes No
    GO to  HU8. GO to  HU9.
  4. HU4 CHECK FOR BINDING OR STICKING OF THE THROTTLE SYSTEM 
    • Gently cycle the throttle from fully closed to fully open and back to fully closed. Check for sticking or binding during rotation.

    Is a stick or bind condition present? 

    Yes No
    GO to  HU5. GO to  HU6.
  5. HU5 ISOLATE THE BINDING AND/OR STICKING CONCERN 
    CAUTION: Do not attempt to clean the throttle bore and plate area. Cleaning will damage the throttle body assembly.
RENDER: 1.0x

NO RELATED

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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.