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Home >> Porsche >> 1989 >> 911 Turbo, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Basic Testing >> Ignition Checks >> Ignition Coil Primary Resistance

Ignition Coil Primary Resistance

  1. With ignition switch in the "OFF" position, disconnect wires from primary terminals of ignition coil to isolate it from the system. Set ohmmeter at x1 scale.
  2. Connect ohmmeter leads to 2 primary terminals. Reading should be .4-.6 ohm. If not, replace ignition coil.
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