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 100 (ENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL - 4.6L)FUEL SYSTEMUPPER INTAKE MANIFOLDREMOVAL
1991 Mercury Tracer Base, 4D Sedan, Automatic
Upper Intake Manifold: Removal
1991 Mercury Tracer Base, 4D Sedan, AutomaticSECTION Removal
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1995 Mercury Grand Marquis, 1995 Mercury Cougar, 1995 Lincoln Town Car, 1995 Lincoln Mark VIII, and 1995 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
- Remove intake air ducting. Disconnect wiring harness connectors as necessary. Disconnect throttle and transmission linkages from throttle body. Remove cable bracket with cables attached, and position bracket aside.
- Mark and disconnect all vacuum lines to throttle body and upper intake manifold. Disconnect coolant by-pass hose. Disconnect PCV system from fitting at rear of upper intake manifold. Remove EGR valve (if necessary).
- Remove nut retaining alternator bracket to upper intake manifold. Remove 2 bolts retaining alternator bracket to water pump and alternator. Remove bolts holding upper intake manifold to lower intake manifold. Remove upper intake manifold and throttle body as an assembly.
RENDER: 1.0x
NO RELATED
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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.