1992 Pontiac LeMans VLFACTORY OEM SERVICE PROCEDURE

Ignition Coil Testing

  1. Using an ohmmeter, check resistance between B+ terminal and base of ignition coil. See Fig 1 . Reading should be high or infinite (open circuit). If resistance is not high or infinite, replace ignition coil.
  2. Check resistance between B+ and C- terminals. Reading should be about 0.5 ohm. Check resistance between C+ terminal and coil secondary terminal. Reading should be about 8300 ohms.
Fig 1: Testing Ignition Coil
G93083Courtesy of GENERAL MOTORS CORP.
Factory Service Tools

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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.