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 MANUALSSUBARU1991LEGACY L, 4D SEDAN, AWD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTINGIGNITION CHECKSIGNITION COIL RESISTANCE CHECKALL OTHER MODELS
1991 Subaru Legacy L, 4D Sedan, AWD, Standard
All Other Models
1991 Subaru Legacy L, 4D Sedan, AWD, StandardSECTION All Other Models
- There are 2 2-wire connectors at ignition coil; disconnect the round connector. Check primary resistance between terminals. If resistance is not .81-.99 ohm, replace coil.
- To check secondary resistance, connect ohmmeter between coil secondary tower and White/Black wire terminal of 2-wire connector. If resistance is not 8500-11,000 ohms, replace coil.
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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.