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.
1987 Chevrolet Chevette L4-98 1.6LFACTORY OEM SERVICE PROCEDURE
Alternator
Test Output and Field Current Draw
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| Rated Output | Test Output | Field Current Draw |
| 78, 94 | - Note: Increase engine speed until maximum output is obtained (approximately 2000 rpm); Output must be within 10 amps of rated output | 4-5 |
| 85, 100, 105, 108, 120 | - Note: Output at 2000 rpm must be within 15 amps of rated output | --- |
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.