900 L4-1985cc 2.0L SOHC (1988)
Air Flow Meter/Sensor: Testing and Inspection
Plate Movement
Fig. 9 Air flow sensor plate side clearance
Fig. 6 Air flow sensor plate rest position
To prevent fuel from being injected when sensor plate is lifted, ensure that ignition switch is in off position.
1.
Remove rubber bellows between air flow sensor and throttle housing.
2.
Lift up on sensor plate using pliers on center stud or a magnet.
3.
As lever arm is lifted, steady resistance should be felt from dampening of the control plunger.
4.
As lever arm is pushed down suddenly, no resistance should be felt, as lever arm is not acting on plunger.
5.
Check that clearance between edge of sensor plate and venturi wall is uniform, Fig. 9.
6.
Check rest position of sensor plate, Fig. 6.
7.
Top of plate should be even with, to 0.02 in. (0-0.5 mm) below, lower edge of venturi.
8.
If clearances or lever arm operation are not as specified, air flow sensor must be removed and disassembled, proceed to step 9. If the clearances
and arm operation are good, test is over.
9.
Remove mixture control unit, lower plastic section, and fuel distributor.
10.
Remove retaining screws and sensor plate.
11.
Remove circlips from lever seating, shims, rubber seals, spring and balls.
12.
Remove counterweight retaining screw and press out pivot.
