Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1985 Porsche 928 AutomaticFACTORY OEM SERVICE PROCEDURE
Test Equipment: Connections
- With Bosch (Mot 300/400) tester: Use positive and negative leads (Red and Black terminals) for connection on sensors. Press the "Special/10 V" and "%" buttons on tester.
- With Sun (1010/1080) tester: Use single test leads of inductive clip terminal 4 (Blue and Black). Blue and Black terminals are connected on the sensor. Set tester to "Primary +/4H/2 Cyl./50 V".
- With Sun (1080) tester: The coil test button should be pressed during the test. Set the right regulator located underneath the scope adjusting cover to 25V.
- With Sun (1010) tester: Connect terminal 1 (Green) and the terminal 15 (Blue) terminals.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.