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.
1987 Porsche 944 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Diagnosis & Testing: Notes
CAUTION:
DME ignition system voltage is extremely high. Contact with high voltage parts while engine is running could prove fatal. Always turn ignition switch to "OFF" position or remove battery ground cable when connecting testers or replacing system components. High voltage is present at spark plug, distributor, and ignition coil connections and at terminal No. 1 of the CU. DO NOT attempt to check ignition system by a removing spark plugs. This may destroy ignition coil or CU.
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.