Call a 12 mm wrench to remove the nuts on the O2 sensor's mounting bracket.
One do-it-yourself Car repair that can save you a choice deal of beans is to moderate an Oxygen sensor on your 1997 Toyota 4Runner. There are two O2 sensors on the Motor lorry, both of which are used To measure the O2/fuel ratio. A malfunction of either of these sensors is a frequent aim for the "Probation Engine" bright to come on. Crawl under the 4Runner from the passenger side fair last the front tire. The two sensors are on top of the exhaust pipe: one on each side of the catalytic converter. Use a 12 mm wrench to remove the two nuts holding the sensor's mounting bracket in place.
Most retail Car parts stores can drop a easy and chargeless diagnostic confirmation that tells which of the two oxygen sensors you must change.
Instructions
1. It's possible the nuts may be very tight. If so, spray first with Liquid Wrench or similar lubricant, wait and then try again.2. Use your finger to trace the wire to the plastic connection plug. Use a flat-head screwdriver to push down on the clasp, and unplug the connector.
3. Place the mounting bracket on top of the exhaust pipe and screw the nuts back into place, fastening tightly.
4. Plug the plastic fastener connection together.
