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.
1983 Mercury Capri Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor
- Disconnect ECA plug J1. Connect an ohmmeter between ground and pins 9, 11, and 12 of plug. No continuity should exist between ground and any pin. Connect ohmmeter to all combinations of the 3 pins. No open circuits should exist.
- If circuit does not perform as specified, disconnect harness from sensor and repeat test at sensor. If continuity to ground or an open circuit between pins still exists, replace sensor. If sensor performs as specified, check and repair wiring harness as needed.
Factory Service Tools
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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.
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