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Idle Speed

CAUTION: Some tachometers may not be compatible with ignition system. Consult tachometer manufacturer before connecting tachometer to system. DO NOT allow tachometer terminal to become grounded, or ignitor and/or coil may be damaged.
NOTE: Idle speed is controlled by the ECM and is not adjustable.

Connect tachometer to terminal IG- of DLC No. 1. See Figure. See DATA LINK CONNECTOR (DLC) NO . 1 under IGNITION TIMING. Start engine. If idle speed is not within specification, go to IDLE CONTROL SYSTEM in SYSTEM & COMPONENT TESTING article. See IDLE SPEED SPECIFICATIONS  table.

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