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Load Test

  1. Ensure drive belt is in good condition and properly tightened. Connect charging system load tester in accordance with manufacturer's instructions. Start and run engine at 2000 RPM and apply load until alternator output amperage levels off.
  2. Record maximum alternator amperage output. See ALTERNATOR OUTPUT SPECIFICATIONS table for output values. If alternator output is within 20% of rated output amperage and voltage remains 12.5-14.5 volts, alternator output is okay. If alternator does not produce rated output, proceed with appropriate testing.
ALTERNATOR OUTPUT SPECIFICATIONS

Application Amps Rating
Mustang 130
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