Idle Load Compensator Adjustment

NOTE: On some models an idle load compensator is used to control isle speed. This unit should not be adjusted, unless if during diagnosis, curb idle speed is not within specifications. This adjustment should be performed with engine at operating temperature and choke and A/C off.

1. Remove air cleaner assembly and plug vacuum hose to thermal vacuum valve.
2. Disconnect and plug hoses to EGR valve, cannister purge port and idle load compensator.
3. Apply parking brake and block wheels, then back throttle stop screw out 3 turns.
4. With engine operating, place transmission selector in drive position, adjust plunger to obtain 750 RPM. The jam nut on the plunger must be held in position to prevent damage to guide tabs. If a replacement idle load compensator is being installed, the plunger should be set to obtain a clearence of .953 inch from jam nut to tip of plunger.
5. Connect vacuum hose to idle load compensator and note idle speed. If idle speed requires adjustment, stop engine and remove idle load compensator.With idle load compensator removed, remove rubber and metal plug from center outlet tube.
6. Using a 0.090 inch allen wrench, rotate center outlet tube adjusting screw to obtain 500 RPM. Each turn of the adjusting screw will change idle speed approximately 75 to 100 RPM. Rotate adjusting screw counterclockwise to increase engine speed and clockwise to decrease engine speed.
7. Reinstall rubber plug on center outlet tube, then install idle load compensator on carburetor. If a final adjustment is necessary it will be necessary to repeat steps 6, 7 and 8.
8. Apply a suitable vacuum source to idle load compensator to fully retract plunger. Adjust throttle body idle stop screw to obtain 500 RPM, then reconnect all vacuum hoses and install air cleaner.