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.
1998 Chevrolet Metro BaseFACTORY OEM SERVICE PROCEDURE
System Output Test
- Check wiring harness electrical connections at generator. Check drive belt tension. See BELT TENSION under ADJUSTMENTS. Ensure battery is fully charged.
- Connect a voltmeter between ground and generator terminal "B". See Fig 1. Connect ammeter positive lead to generator terminal "B". Connect ammeter negative lead to to positive battery terminal on battery.
- To check generator no-load output, ensure all accessories are off. Start engine and allow it to idle. Increase engine speed to 2000 RPM and note output voltage and output amperage.
- If maximum current output is within 10 amps of rated amp output (55 amps) and voltmeter reading is 13.5-16.0 volts, generator is okay. If maximum current output is not within 10 amps of rated amp output and/or voltmeter reading is less than 13.5 volts, repair or replace generator.
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.
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