Federal

PRELIMINARY PROCEDURES
- Warm engine to normal operating temperature (upper radiator hose hot).
- Turn "OFF" all accessories, including A/C.
- Check Timing (adjust if not to specification). Ignition Timing
- Connect tachometer.

CAUTION: Exercise care not to ground the TACH terminal (which is located next to the BAT connector) as this may damage the Electronic Control Module (ECM) or coil.

CURB IDLE SPEED
- Disconnect and plug vacuum hose to EGR valve and canister purge.
- Adjust curb idle speed.



Without A/C
- Turn idle speed screw to specified curb idle (automatic transmissions in drive with wheels blocked and parking brake set). Specifications

With A/C
- With A/C "OFF", turn idle speed screw to specified curb idle (automatic transmissions in drive with wheels blocked and parking brake set).
- Disconnect wire to A/C compressor clutch and turn A/C "ON".
- Open throttle momentarily to assure solenoid plunger is fully extended.



- Turn solenoid screw to the specified idle speed. Specifications
- Reconnect wire to compressor clutch.

THROTTLE LEVER ACTUATOR
- Disconnect vacuum hose from solenoid valve to the actuator diaphragm.
- Connect an external vacuum source to the diaphragm and apply 20 inches of vacuum.



- Manually open the throttle slightly and allow it to close against the extended actuator plunger. With engine warm, idle speed should be:
Federal - 1500 rpm
California - 1600 rpm

NOTE: The throttle lever actuator is designed to control emissions by holding the throttle open slightly during deceleration and coasting.