200SX L4-1998cc 2.0L DOHC MFI (SR20DE) (1995)
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3. Loosen the sensor approximately 10 degrees.
4. Spray with rust penetrant again for 2 to 3 seconds.
5. Tighten the sensor 10 degrees, then loosen the sensor 10 degrees.
^ Repeat this motion several times until the sensor begins to turn more easily.
6. Continue the tightening/loosening motion while gradually unscrewing the sensor. Stop when the sensor will not unscrew any further.
7. Spray with rust penetrant again for 2 to 3 seconds.
8. Repeat steps 6 and 7 until the sensor is removed.