Lock Test

1998 Subaru Forester BaseSECTION Lock Test
  1. Using starter bench tester, connect test equipment and lock starter armature. Engage tester momentarily while measuring starter torque, current draw and voltage drop.
  2. Check specifications for minimum torque, voltage drop (minimum volts) and current draw (maximum amps). See STARTER SPECIFICATIONSΒ .
  3. Low current draw and no torque during lock test may be caused by excessive resistance between brushes and commutator. Normal current draw but low torque speed may be caused by a shorted commutator and/or poor insulation.
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.