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Home >> Pontiac >> 1998 >> Sunfire GT, 2.2 4 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Controls - Basic Diagnostic Procedures - 2.4L) >> Basic Ignition System Checks >> IDI >> Spark

Basic Ignition System Checks: IDI: Spark

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  1. Disconnect tachometer wire from IDI module (if equipped). A shorted tachometer will not allow vehicle to start. Temporarily remove IDI assembly and install Spark Plug Jumper Wires (J-36012). When removing spark plug wire from spark plug, twist and pull on boot. DO NOT pull on wire.
  2. Using Spark Tester (J-26792), check for spark at each spark plug wire. Leave other wires connected while checking for spark. Check spark plug wire resistance on suspect wires. Resistance should be about 25,000 ohms.
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