Removing And Installing Cable On Vacuum Servo

1. Pry cover off of vacuum servo.

3. Press clip out of cap and take cap off of cable.

Make sure cable is installed without sharp bends. Cable should have approx. 1 mm play on throttle mounting point. Under no circumstances should the cable be tight when the engine is stopped.

Cruise Control Vacuum Servo1981 Porsche 928 Engine Diagram


First check the following points when the automatic cruise control malfunctions.

1. Check fuse no. 10 (no. 7 beginning with 1981 models).

This fuse is also for the stop lights.

4. Check that electric connection on vacuum servo fits tight.

5. Check function of microswitch on clutch pedal. Switch must have switched fully, i, e. contact made, when clutch pedal is in off position {switching heard when operating clutch).

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