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Home >> Ford >> 1993 >> Crown Victoria Base >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator - MOTORCRAFT W/Integral Regulator >> On-Vehicle Testing >> Load Test >> Internal Fan

Internal Fan

  1. Connect tachometer to engine. Start engine. Load alternator by switching heater/air conditioner blower to high speed and headlights to high beam. Increase engine speed to 2000 RPM.
  2. Voltmeter should indicate at least 0.5 volt greater than base voltage. If voltage is within specification, alternator operation is normal. If voltage is less than 0.5 volt more than base voltage, proceed to LOW VOLTAGE TEST.
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