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Ignition Coil Resistance

Disconnect electrical connector and ignition coil wire from ignition coil. Using an ohmmeter, measure primary and secondary resistance. See Fig 1. Replace ignition coil if readings are not within specification. See IGNITION COIL RESISTANCE table.

IGNITION COIL RESISTANCE - Ohms

Application Primary Secondary
Metro (1) 1.35-1.65 22,100-29,900
(1) Measured @ 68°F (20°C).
Fig 1: Measuring Ignition Coil Resistance
G91G16358Courtesy of GENERAL MOTORS CORP.