Idle Speed & Ignition Timing

WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, 2003 Subaru Impreza, 2003 Subaru Forester, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.

Ensure idle speed and ignition timing are set to specification. See IDLE SPEED SPECIFICATIONS and IGNITION TIMING (DEGREES BTDC @ IDLE) tables.

IDLE SPEED SPECIFICATIONS

Application			RPM
2.0L
With A/C Off			750 +/- 100
With A/C On
A/T			825 +/- 150
M/T			800 +/- 150
2.5L
With A/C Off
A/T			700 +/- 100
M/T			650 +/- 100
With A/C On			850 +/- 100
3.0L
With A/C Off			600 +/- 50
With A/C On			700 +/- 50

IGNITION TIMING (DEGREES BTDC @ IDLE)

Application

⁽¹⁾ Auto. Trans.

⁽¹⁾ Man. Trans.

2.0L

12 @ 700 RPM

12 @ 750 RPM

2.5L

15 @ 700 RPM

10 @ 650 RPM

3.0L ⁽²⁾

10 @ 600 RPM

⁽³⁾

⁽¹⁾	To improve stability, timing is controlled while engine is idling. Timing range is plus or minus 8 degrees (3 degrees on 2.0L).

⁽²⁾	Timing must be checked using a scan tool.

⁽³⁾	Manual transmission is not available with 3.0L engine.