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
Leaks In Intake System
- Check all connections after hot wire sensor for tightness and leaks. Check sealing of hot wire air sensor (no pinched gaskets).
- Mount self-made tool to airflow sensor using two 4 x 45 mm screws. See Fig 1 . Build up 14 psi through the airflow sensor using a tire pump. If leaks are in the induction system there will be a rapid drop in pressure and the presence of air escaping.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.