Fast Idle Speed
1. Disconnect and plug the EGR valve vacuum hose (D).
2. Place automatic transmissions in the PARK position and manual transmissions in NEUTRAL.
3. Start the engine.
4. Position the fast idle speed adjustment screw (E) in contact with and against the shoulder of the second step (F) of the fast idle cam.
5. Refer to the Vehicle Emission Control Information label located under the hood. Adjust the fast idle speed to the correct rpm. Adjust by turning the fast idle speed adjustment screw (E).
6. Remove the fast idle speed adjustment screw from the fast idle cam and allow the engine to return to curb idle speed.
7. Turn the ignition switch OFF
8. Connect the vacuum hose to the EGR valve.
Curb Idle Speed and Sole-Vac Throttle Positioner
1. Disconnect the vacuum hose (G) from the Sole-Vac vacuum actuator and plug it.
2. Disconnect the Sole-Vac holding solenoid wire connector (H).
3. Start the engine.
4. Place manual transmissions in NEUTRAL and automatic transmissions in DRIVE. Set the parking brake firmly.
5. Increase the engine speed to above 1200 rpm for 3 to 5 seconds and allow the engine to return to curb idle speed.
6. Adjust the carburetor curb (slow) idle speed adjustment screw (J) to obtain the specified curb (slow) idle speed rpm. Refer to the Vehicle Emission Control Information label.
7. Apply a direct source of 34-51 kPa (10-15 in. Hg) vacuum to the vacuum actuator (K). Use Hand Operated Vacuum Pump Tool J-23738-A, or equivalent.
8. Increase the engine speed to above 1200 rpm for 3 to 5 seconds and allow the engine to return to curb idle speed.
9. With the Sole-Vac throttle positioner fully extended, turn the vacuum actuator adjustment screw (L) on the throttle lever until the specified engine rpm is obtained. Refer to the Vehicle Emission Control Information label.
10. Disconnect the vacuum source from the vacuum actuator
11. With a jumper wire, apply battery voltage (12V) (or connect the holding solenoid wire connector and turn ON the air conditioner with the compressor clutch wire connector disconnected) to energize the holding solenoid.
12. Hold the throttle open manually to allow the throttle positioner to fully extend.
NOTE: Without the vacuum actuator, the throttle must be opened manually to allow the Sol-Vac throttle positioner to be fully extended.
13. Adjust the Sole-Vac throttle positioner (M) to obtain the specified engine rpm. Refer to the Vehicle Emission Control Information label.
14. Turn the ignition switch OFF.
15. Remove the jumper wire from the Sole-Vac holding solenoid wire connector (if connected).
16. Connect the Sole-Vac holding solenoid wire connector.
17. Remove the plug and connect the vacuum hose to the vacuum actuator.
18. Disconnect the tachometer.
19. If disconnected, connect the A/C compressor clutch wire connector.
20. Install the air filter assembly.
21. Road test the vehicle.
SRT/TIC INFORMATION
OPERATION DESCRIPTION NUMBER TIME TIC
^ CO. IDLE SPEED, ENGINE-ADJUST 0106 0.6 1-265
INC. IGNITION TIMING, FAST IDLE, CURB
IDLE AND SOLE-VAC THROTTLE
POSITIONER ADJUSTMENTS
FILING INSTRUCTIONS
Record this I.S. Note on page B-40 of the M.R. 251 manual and file it in the manual.