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 MANUALSPONTIAC1987FIERO BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMFUEL INJECTION SYSTEM - TBIREMOVAL & INSTALLATIONELECTRONIC CONTROL MODULE (ECM)REMOVAL
1987 Pontiac Fiero Base, Automatic
Electronic Control Module (ECM): Removal
1987 Pontiac Fiero Base, AutomaticSECTION Removal
Disconnect negative battery cable. Remove interior covering of ECM location. Disconnect ECM electrical leads. Remove ECM and carefully remove PROM from ECM.
CAUTION:
To prevent internal ECM damage, ignition switch must be in "OFF" position when disconnecting or reconnecting power to ECM (for example, battery cable, ECM pigtail, ECM fuse, jumper cables, etc.).
RENDER: 1.0x
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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.