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 MANUALSMERCURY1999TRACER LS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 1606 (ENGINE CONTROLS - DESCRIPTION AND OPERATION (EXCEPT DIESEL & HYBRID))POWERTRAIN CONTROL HARDWAREPCM LOCATIONS
1999 Mercury Tracer LS, 4D Sedan, Standard
PCM Locations
1999 Mercury Tracer LS, 4D Sedan, StandardSECTION PCM Locations
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
For PCM removal and installation procedures, refer to the appropriate ELECTRONIC ENGINE CONTROLS article.
- Crown Victoria, Grand Marquis, Town Car - engine compartment, driver side, fender mounted.
- E-Series - engine compartment, driver side, near the cowl (access from the engine compartment).
- Edge, Expedition, F-150, F-Series Super Duty, MKX, Navigator - passenger side of the engine compartment, mounted to the cowl.
- Explorer - engine compartment, center position, mounted to the cowl under the cowl panel grille.
- Fiesta - engine compartment, driver side, near the battery.
- Flex, MKS, MKT, Taurus - engine compartment, passenger side, mounted to the cowl under the cowl panel grille.
- Focus, Transit Connect - engine compartment, driver side, front of battery.
- Fusion, Milan, MKZ - engine compartment, driver side, under battery, mounted to the cowl.
- Mustang - front of engine compartment, passenger side, near the battery junction box (BJB).
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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.