O2 sensor

I have a couple of questions about changing the O2 sensors in my 2002 Taurus. First, is this something that a minimally competent backyard mechanic should take on? I do the basics -- oil and gas filters, spark plugs, brake pads. Am I out of my league attempting this? Second, is it best to just change all of them while I'm at it? Or should I experiment to find the one that's causing the check engine light to come on?

THanks.

Mike

Get a machanic or parts store to pull the code. This will tell you which sensor it is. Depending on what engine is in your car and what sensor it is, you may need a mechanic. Get the code and I can tell you if you should attempt it or not. :sunglasse

The sensors are something you should be able to do. You need a special socket to extract/install them because of the cable and location. They are fairly expensive so it is not something you usually replace en masse as you do for spark plugs and wires. Therefore, as has been suggested in another post, determine the exact one to replace by interpreting the diagnostic code.

What are the typical symptoms of a faulty O2 sensor? (can't remember if I already asked this).

"Should" set a code and light the "check engine" light......

typically if you have a bad O2 sensor and you don't get it replaced the engine will run a little rough, and have a little loss in power.