OXYGEN SENSOR

2004 Kia Optima

Tiny

JVILLANELLI

April, 5, 2010 AT 11:12 AM

Engine Performance problem
2004 Kia Optima 6 cyl Front Wheel Drive Automatic 185000 miles

HOW DO I REPLACE THE LOER AND UPPER OXYGEN SENSORS

FOUND 3464 RELATED QUESTIONS

1 Answer

Tiny

bluelightnin6

April, 30, 2010 AT 9:40 PM

Once, you've located the oxygen sensor to be replaced, spray the threaded area with a penetrating lubricant. While the lubricant loosens the connection, carefully disconnect the wiring harness and place it aside.
Using a flared or box-end wrench, loosen and remove the old sensor.
New oxygen sensors usually come with a special anti-seize compound applied to the threads. Simply position the new sensors in the threaded hole and tighten in place. There's no need to over-tighten the sensor-just past hand tight should be fine. Once the plug is in place, re-attach the wiring harness.

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