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Subaru
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1991
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XT Automatic
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Repair and Diagnosis
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Engine Performance
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Remove, Overhaul & Install
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Engine Controls - Remove/Install/Overhaul
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Fuel System
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Oxygen (O2) Sensor
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Removal
Oxygen (O2) Sensor: Removal
If O2 sensor is difficult to remove, use rust penetrant to avoid damaging exhaust threads.