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Idle Speed & Ignition Timing

Verify idle speed and ignition timing are set to specification. See IDLE SPEED SPECIFICATIONS and IGNITION TIMING tables. For adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE section.

IDLE SPEED SPECIFICATIONS

Application (1) RPM
With Accessories Off 600-800
With Accessories On 800-900
(1) With test mode and read memory connectors connected.
IGNITION TIMING (Degrees BTDC @ RPM)

Application Auto. Trans. Man. Trans.
Non-Turbo 12-28 @ 700 18-22 @ 700
Turbo 7-23 @ 700 7-23 @ 700