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.
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HOMESERVICE MANUALSMERCURY1991TRACER BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 120 (ENGINE CONTROLS - THEORY & OPERATION - EEC-IV 2.3L)COMPUTERIZED ENGINE CONTROLSINPUT DEVICESMANUAL LEVER POSITION (MLP) SENSOR
1991 Mercury Tracer Base, 4D Sedan, Automatic
Manual Lever Position (MLP) Sensor
1991 Mercury Tracer Base, 4D Sedan, AutomaticSECTION Manual Lever Position (MLP) Sensor
WARNING: This page is about a different car, the 1994 Mercury Topaz and 1994 Ford Tempo. However, it is still accessible from the selected car via links, so may be relevant.
MLP sensor is mounted on transmission selector lever. MLP indicates shift lever position by means of a variable resistance signal. This signal is used by PCM to determine gear shift selector position.
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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.