Pathfinder 4WD V6-2960cc 3.0L SOHC MFI (VG30E) (1990)
Technical Service Bulletin # EF90001
Date: 900118
Fuel - Base Idle Speed, Manual Update
Classification:
Section: Engine Fuel &
EF&EC90-001
Emission Control
Reference:
TECHNICAL BULLETIN NTB90-003
Models:
1990 Truck/Pathfinder
Date:
January 18, 1990
ADJUSTING BASE IDLE SPEED
Service Manual Amendment
APPLIED MODEL: 1990 Truck/Pathfinder (D21) with KA24 engine
SERVICE INFORMATION
Use Air Bypass Screw
When adjusting the base idle speed of 1990 D21 trucks (KA24E engine), turn the idle speed adjusting screw (in the idle air adjusting unit, IAA) on the
throttle body as shown below.
Do Not Use This Screw
Do not use the throttle valve adjusting screw (throttle stop screw) to set the base idle. This is preset at the factory and adjustment is not necessary.
The attached Service Manual pages include a corrected idle adjustment procedure and correct AAC valve illustrations. Also note the ignition-timing
correction and deletion of the air regulator (not applicable to the D21 KA24E engine).
Trouble Diagnoses
TROUBLE DIAGNOSES
KA24E
Electrical Components Inspection (Cont'd)