Federal Vehicles (Digifant II)

NOTE: If the the throttle switches are misadjusted, the engine may surge at idle or cutout during a steady driving speed or light throttle applications.
The throttle valve basic adjustment must be OK. Refer to FUEL SYSTEMS.

Throttle Switches:

IDLE SWITCH

1. With the ignition "OFF" disconnect the throttle switch harness connector.
2. Connect a suitable volt/ohm meter between the terminals of the throttle switch plug.

Adjustment Of Throttle Switches:

3. Insert a 0.008 in. (0.20 mm) feeler gauge between the stop screw and the throttle stop (a).
4. Close the throttle valve fully.

^ The correct measurement should be 0 ohms (continuity).

5. Open the throttle valve and insert a 0.024 in. (0.60 mm) feeler gauge.
6. Let the throttle valve close.

^ The correct measurement should be infinite ohms (no continuity).

7. If the adjustment is incorrect remove the throttle housing from the intake manifold.
8. Loosen the idle switch and reposition it as necessary to obtained the correct results.
9. Recheck the switch closing point.
10. Reinstall the throttle housing (torque to 15 ft. lb.).

Full Throttle Switch Checking:

FULL THROTTLE SWITCH

1. With the ignition "OFF" disconnect the throttle switch harness connector.
2. Connect a suitable volt/ohm meter between the terminals of the throttle switch plug.
3. Screw protractor VW 3084, or equivalent to the top of the throttle shaft.
4. Attach the pointer of the protractor to the throttle cable mounting bracket.
5. Open the throttle lever completely to full throttle stop; then zero the pointer for the protractor.
6. Close the throttle approx. 20°.

^ The volt/ohm meter should read infinite ohms (no continuity).

7. Slowly push in the direction of full throttle stop until the full throttle switch closes and the volt/ohm meter reads 0 ohms (continuity)

^ The full throttle switch must close (continuity) at 10° ± 2° before full throttle stop.

If the adjustment is incorrect loosen the full throttle switch and reposition it as necessary to obtained the correct results.

8. Secure the switch hold-down screw and repeat the test procedure.
9. Press the accelerator pedal to the floor.

^ The throttle valve must be open fully.

If the throttle valve is not fully open adjust the accelerator cable. Refer to FUEL SYSTEMS.