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.
1990 Geo Metro LSi, 4D Hatchback, AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Pressure Release
- Remove main fuse box cover and engine coolant reservoir from bracket. Remove main fuse box attaching screws. From underneath fuse box, release 2 locking tabs of fuel pump relay. See Fig 1 for fuel pump relay location.
- Disengage fuel pump relay from fusebox and then remove harness connector. Loosen fuel filler cap to relieve tank pressure. Start engine and idle until engine dies. Crank engine for 30 seconds to ensure fuel line pressure is dissipated. Turn off ignition. Install fuel pump relay.
Factory Service Tools
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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.