Sebring 2006

Alternator

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Diagnosis & Testing



The alternator provides power consuming components with current while the engine is running and maintains battery charge. The alternator is mounted on the front edge of the engine. The output of the alternator depends on engine speed. When the engine is idling, the alternator operates at approximately half of its maximum output. When the engine is idling with many power consuming components engaged, the alternator may be unable to maintain full battery charge.

The alternator creates an alternating current which is converted to a direct current in the rectifier bridge. The alternator also utilizes a built-in voltage regulator.

  1. Check that the wiring is in good condition.
  2.  
  3. Check for any abnormal noise from the alternator while the engine is running. Noise emitting from the alternator may be caused by:

    Worn, loose or defective bearings
     
    Loose or defective drive pulley
     
    Incorrect, worn, damaged, or misadjusted drive belt
     
    Loose mounting bolts
     
    Misaligned drive pulley
     
    Defective stator or diode
     
    Damaged internal fins
     

  4.  
  5. Check the accessory drive belt for wear or slipping.
  6.  
  7. With the engine running at 2,500 RPM, headlights on and fan blower on high:
    1. The alternator output voltage should be 14.0 volts plus or minus 0.5 volts at 68°F.
    2.  
    3. The alternator test amperage should be 135 Amps.
    4.  

  8.  

Removal & Installation



2.4L Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    The negative battery cable from the shock tower
     
    The accessory drive belt cover
     
    The alternator electrical connectors
     
    The accessory drive belt splash shield
     
    The accessory drive belt
     
    The Manifold Absolute Pressure (MAP) sensor from the intake manifold
     
    The alternator bolts
     
    The alternator

    Click image to see an enlarged view

    Fig. Exploded view of the alternator and related components-2.4L engine

     

  4.  

To install:

  1. Install or connect the following:

    The alternator and torque the bolts to 33 ft. lbs. (44 Nm)
     
    The MAP sensor
     
    The accessory drive belt and splash shield
     
    The alternator electrical connectors
     
    The accessory drive belt cover
     
    The negative battery cable
     

  2.  

2.7L Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Raise vehicle and support.
  4.  
  5. Remove the accessory drive belt splash shield.
  6.  
  7. Loosen the accessory drive belt.
  8.  
  9. Remove the lower mounting bolt.
  10.  
  11. Lower the vehicle.
  12.  
  13. Remove the electrical connections from the alternator.
  14.  
  15. Disconnect the electrical connector to the A/C pressure switch and A/C clutch.
  16.  
  17. Remove the engine oil dip stick.
  18.  
  19. Remove the 2 upper mounting bolts.
  20.  
  21. Remove the alternator.
  22.  

To install:

  1. Install the alternator.
  2.  
  3. Install the 2 upper bolts, but do not tighten.
  4.  
  5. Install the engine dip stick tube.
  6.  
  7. Connect the A/C pressure switch and A/C clutch electrical connectors.
  8.  
  9. Connect the electrical connections to the alternator.
  10.  
  11. Raise vehicle and support.
  12.  
  13. Install the lower bolt. Tighten bolt to 40 ft. lbs. (54 Nm).
  14.  
  15. Install the accessory drive belt.
  16.  
  17. Install the accessory drive belt splash shield.
  18.  
  19. Lower the vehicle.
  20.  
  21. Install the 2 upper mounting bolts. Tighten bolts to 40 ft. lbs. (54 Nm).
  22.  
  23. Connect the negative battery cable.
  24.  

 
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