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Home › Nissan-Datsun › 1989 › Sentra Base › Repair and Diagnosis › Engine Performance › System › Basic Testing - 4-CYL › Optical Ignition System Checks (Except Pulsar NX Se) › Idle Speed & Ignition Timing

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 the false setting of trouble codes. For adjustment procedures, see D - 4-CYL ADJUSTMENTS article.

4-CYLINDER IDLE SPEED

Application Idle RPM
Pathfinder & Pickup
Automatic Transmission (1) 600-700
Manual Transmission 750-850
Pulsar NX SE
Automatic Transmission (1)(2) 650-750
Manual Transmission (2) 750-850
Pulsar NX XE
Automatic Transmission (1)(3) 625-725
Manual Transmission (3) 675-775
Sentra
Automatic Transmission (1) 575-675
Manual Transmission 675-775
Stanza
Automatic Transmission (1) 650-750
Manual Transmission 700-800
240SX
Automatic Transmission (4) 700-800
Manual Transmission 700-800
(1) Automatic transmission in Drive.
(2) Adjust with AAC solenoid harness disconnected.
(3) Adjust with throttle sensor harness disconnected.
(4) Automatic transmission in Neutral.
4-CYLINDER IGNITION TIMING (Degrees BTDC @ RPM)

Application Manual Transmission Automatic Transmission
Pathfinder & Pickup 8-12@750-850 (1) 8-12@650-750
Pulsar NX SE (2) 15@750-850 (1)(2) 7@650-750
Pulsar NX XE (2)(3) 7@700-900 (1)(3) 7@650-850
Sentra (2)(3) 7@700-900 (1)(2)(3) 7@600-800
Stanza 13-17@700-800 (1) 13-17@650-800
240SX 13-17@700-800 (4) 13-17@700-800
(1) Automatic transmission in Drive.
(2) Feedback controlled RPM.
(3) Adjust timing with throttle sensor harness disconnected.
(4) Automatic transmission in Neutral.
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