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.
1980 Lincoln VersaillesFACTORY OEM SERVICE PROCEDURE
Testing & Diagnosis: Notes
- TESTING FORD MOTOR CO. ELECTRONIC ENGINE CONTROL SYSTEM - Due to the complexity of the EEC system, the following test equipment is required for thorough diagnosis and testing: Digital volt/ohm meter (DVOM), EEC diagnostic tester, sensitive tachometer, inductive timing light, sensitive vacuum gauge, hand vacuum pump/tester and throttle RPM tool. In addition, EFI models require an EFI adapter harness and a fuel injection pressure gauge.
NOTE:
If testing an EEC-II equipped vehicle, change Test Sequence II TAB timeout from "60±5 Secs." to "within 180 Sees." to conform to 1980 calibrations.
Without the special test equipment, the EEC system cannot be fully tested, but a number of preliminary checks can be made in the case of an "intermittent" or "won't start" condition.
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.