LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 1989 >> Prelude Si, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Basic Testing - Fuel Injected >> Idle Speed & Ignition Timing
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Idle Speed & Ignition Timing

Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article.

IDLE SPEED SPECIFICATIONS (1)

Application RPM
Low Altitude 700-800
High Altitude
Manual Transmission 750-850
Automatic Transmission 700-800
Fast Idle
Low Altitude 1000-2000
High Altitude 1100-1900
(1) Idle speed is set with headlights and cooling fan off and automatic transmission in Drive.
IGNITION TIMING (Degrees BTDC @ RPM)

Application Setting
Fuel Injected -
Automatic Transmission (1) 13-17 @ 700-800
(1) Automatic transmission in Drive.
scientia non olet · About LEMON Manuals