Question about 2001 Ford Taurus
Be sure the exhaust is not extremely hot! I suggest using a good quality O2 sensor socket or a 7/8" flare nut wrench. These two will give you the best grip without slipping off. Once it loosens, slowly work it back and forth using a lubricant such as WD-40 or Liquid Wrench. This should keep the threads from being damaged, as they will be very rusted from extreme heat and weather. Take your time. Once removed, it is a good idea to use a thread chaser or cleaner to remove the remaining rust. It is a tool with the identical threads as the sensor. You could also use a tap of the same size. Someone you know might have one, unless you are friends with a mechanic at a good repair shop. Next, be sure there is anti-seize compound on the threads. There should be a sufficient amount applied from the factory. This will make the threads easier to tighten, and make the sensor easier to remove for the next time. Be sure there is no anti-seize on the portion that protrudes into the exhaust stream. It can foul and ruin a new sensor. Once you have threaded the unit into the exhaust pipe, tighten to specifications. DO NOT overtighten. The old threads can easily be stripped out. If you don't have a torque wrench, just tighten it as you would a sprark plug. It won't fall out. Plug in the sensor, and test drive to check your work. Also be sure there are no wires contacting the exhaust pipe.
Posted on Jul 18, 2009
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Posted on Jan 02, 2017
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