Sensor Plate Clearance

Note; A sticking air flow sensor plate or lever can cause a wide range of driveability problems. Make sure that the sensor plate is free to travel through its' entire range, and rests on the spring stop.
1. Using a 0.10 mm (0.004") feeler gauge, check clearance between sensor plate and sensor body at 4 points simultaneously.
a. If adjustment is necessary, loosen screw and center the sensor plate.
b. Torque screw to 43.2 inch lbs.
2. Sticking can also be caused by warpage of the air flow sensor housing which causes the plate lever to bind. You can free a tight sensor plate lever by loosening the mounting bolts around the housing , and then uniformly retightening them to 3.5 Nm (30 in. lb.).

Fig. 10 Air Flow Sensor Arm Pivot Adjustment:

3. If that does not solve the sticking, remove the mixture control unit and check the pivot. If the pivot is dirty, clean it with a solvent and lightly lubricate it.
4. Check for equal clearance on either side of the lever.
a. Measure the clearance on each side of the lever at the pivot.
b. Loosen the clamp bolt at the counterbalance end of the lever, Fig. 10, and center the lever.
c. Tighten the clamp bolt, and recheck clearance.