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Home >> Pontiac >> 1997 >> Firebird Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Basic Engine Testing - 5.7L >> Basic Ignition System Checks >> OPTI-Spark >> Ignition Coil Power Source
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Ignition Coil Power Source

Turn ignition on. Check for battery voltage on ignition feed circuit to ignition coil. If battery voltage is not present, check for blown 10-amp COIL fuse. If fuse is okay, check for open between fuse and ignition coil.