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Home >> Mazda >> 1990 >> 626 Base >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System >> Oxygen (O2) Sensor >> Removal & Installation
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Removal & Installation

If exhaust sensor is difficult to remove, use rust penetrant to avoid possible damage to exhaust threads. Apply anti-seize to sensor threads (if reusing old sensor). New sensor comes precoated with anti-seize. DO NOT remove anti-seize from sensor. Torques specifications are not available from manufacturer.