Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. Improper setting of ignition timing and idle speed may cause driveability problems and/or false setting of trouble codes. For adjustment procedures, see ADJUSTMENTS article in the ENGINE PERFORMANCE section.

4-CYLINDER IDLE SPEED & CO LEVEL

Application

⁽¹⁾ Idle RPM

⁽²⁾ Idle RPM

⁽³⁾ Maximum CO Level

240SX

⁽⁴⁾ 650-750

⁽⁴⁾ 600-700

7.0%

⁽¹⁾	With throttle position sensor connected.

⁽²⁾	With throttle position sensor disconnected.

⁽³⁾	Measured in Self-Diagnostic Mode II.

⁽⁴⁾	Automatic transmission/transaxle in Neutral.

4-CYLINDER IGNITION TIMING (Degrees BTDC @ RPM)

Application

Man. Trans.

⁽¹⁾ Auto. Trans.

240SX

18-22 @ 700-800

⁽¹⁾	Automatic transmission/transaxle in Neutral.