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Home >> Subaru >> 1998 >> Legacy Outback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Idle Speed & Ignition Timing
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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 this section.

IDLE SPEED SPECIFICATIONS

Application RPM
Forester
With A/C Off 650-750
With A/C On 800-900
Impreza
With A/C Off 600-800
With A/C On 750-850
Legacy
With A/C Off 600-800
With A/C On 800-900
IGNITION TIMING (Degrees BTDC @ RPM) (1)

Application Auto. Trans. Man. Trans.
Forester 15 @ 700 15 @ 700
Impreza & Legacy
2.2L 20 @ 700 14 @ 700
2.5L 15 @ 700 15 @ 700
(1) To improve stability, timing is controlled while engine is idling. Timing range is plus or minus 8 degrees (all vehicles).
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