4-Cylinder Idle Speed

Start engine and warm to normal operating temperature. Turn ignition off. Disconnect Throttle Position (TP) sensor harness connector. Start engine.
Increase engine speed to 2000 RPM, 2 or 3 times, then allow engine to return to idle. Ensure ignition timing is set correctly. Check idle speed. See 4-CYLINDER IDLE SPEED & CO% LEVEL table.
If idle speed is incorrect, adjust idle speed by turning idle speed adjusting screw. See Fig 1 and Fig 2 . With idle speed correctly set, turn ignition off. Reconnect TP sensor and recheck idle speed.

4-CYLINDER IDLE SPEED & CO% LEVEL

Application

⁽¹⁾ Idle RPM

⁽²⁾ Idle RPM

⁽³⁾ CO Level (%)

1.6L

Auto. Trans.

⁽⁴⁾ 750-850

⁽⁴⁾ 675-775

⁽⁵⁾ 7

Man. Trans.

600-700

550-650

⁽⁵⁾ 7

2.0L

Auto. Trans.

⁽⁴⁾ 750-850

⁽⁴⁾ 700-800

⁽⁵⁾ 10

Man. Trans.

750-850

700-800

⁽⁵⁾ 10

⁽¹⁾	With throttle position sensor connected.

⁽²⁾	With throttle position sensor disconnected.

⁽³⁾	Measured in self-diagnostic mode.

⁽⁴⁾	Automatic transmission/transaxle in Neutral.

⁽⁵⁾	Maximum CO% level.

Fig 1: Adjusting Idle Speed (1.6L)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Adjusting Idle Speed (2.0L)

Courtesy of NISSAN MOTOR CO., U.S.A.