Prelude L4-1958cc DOHC (1989)
Idle Speed: Adjustments
Equipment Hookup & Adjustment Procedures
1985-87 ALL:
Disconnect and plug vacuum hose at idle controller. Set speed to specified value. Turn AC on and verify the speed-up speed is at specification.
Check fast idle with engine cold.
ACCORD: 1988 - 1989
Electrically disconnect electronic air control valve (EACV). Adjust idle speed to specification. Remove CLOCK fuse for 10 seconds to reset ECU.
Verify that idle is at checking speed. Turn headlights and AC on to check speed-up.
ACCORD: 1990
Electrically disconnect electronic air control valve (EACV). Adjust idle speed to specification. Remove BACK-UP fuse for 10 seconds to reset ECU.
Verify that idle is at checking speed. Turn headlights and AC on to check speed-up.
CIVIC / CRX / WAGON: 1988 - 1990
Electrically disconnect electronic air control valve (EACV). Adjust idle speed to specification. Remove HAZARD fuse for 10 seconds to reset ECU.
Verify that idle is at checking speed. Turn headlights and AC on to check speed-up.
PRELUDE: 1988 - 1990
Electrically disconnect electronic air control valve (EACV). Adjust idle speed to specification. Remove CLOCK fuse for 10 seconds to reset ECU.
Verify that idle is at checking speed. Turn headlights and AC on to check speed-up.
