1976 Porsche (MPC System)
- Throttle valve switch should start to operate when throttle valve is opened 2 degrees from its normally closed position. To adjust throttle valve switch, use Bosch Tester (EFAW 238).
- Use tester manufacturer's instructions for switch positions on tester. Readings on tester should indicate zero resistance at idle, infinity at part throttle, and zero resistance for full throttle.
- If not, loosen throttle switch screws. Rotate throttle valve switch clockwise until needle on tester moves from an infinity reading to a zero reading, then rotate throttle switch counterclockwise one graduation (2 degrees). Tighten throttle valve switch screws and check switch for proper operation.