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 MANUALSSUZUKI1990SWIFT GA, 4D SEDANREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSENGINE SENSORS & SWITCHESOXYGEN SENSOR
1990 Suzuki Swift GA, 4D Sedan
Oxygen Sensor
1990 Suzuki Swift GA, 4D SedanSECTION Oxygen Sensor
- Start and warm engine to operating temperature. Pull back seal at oxygen sensor connector. Using a DVOM with at least a 10-megohm input impedance, backprobe oxygen sensor connector.
- Increase engine speed to 2000 RPM and hold for approximately one minute while watching voltmeter. Reading should fluctuate between zero and one volt, without being constantly high or low. If voltage is not as indicated, see Code 13 in TESTS W/CODES article.
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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.