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 MANUALSBUICK1987CENTURY CUSTOM, 4D SEDAN, 2.5 RREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - TBIREMOVAL & INSTALLATIONELECTRONIC CONTROL MODULE (ECM)NOTES
1987 Buick Century Custom, 4D Sedan, 2.5 R
Electronic Control Module (ECM): Notes
1987 Buick Century Custom, 4D Sedan, 2.5 RSECTION Notes
NOTE:
Location of ECM varies with model. ECM is usually located within passenger compartment either behind right kick panel or under instrument panel. On Fiero models, ECM is in center section between seats.
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.