Usually Bank 2 Sensor 1 is the O2 sensor that is on the 2-4-6 bank and is before the catalytic converter. This is general rule of thumb but of course there are always exceptions. I would do it while the engine is warm but, not too hot. A little anti-seize is a good idea too. Hope this helps. Matt 97 3.5
Thanks guys I will be stopping by the Dodge dealer to pick it up today. One other thing it could be from the O2 sensor but I only get around 17mpg in city driving is this normal, average, low. It seems to me I should be getting 20. But what do you guys average on the 3.3?
Replacing the O2 sensors is good preventative maintainance, especially if you live in a state that is or is going to be testing emissions. You don't have to go to a dealer to get a new O2 sensor. Check around first. You may get a better price at an Autozone or Napa store. Also, check online at Wrenchead.com and Carparts.com. These two should give you a good idea of what they should cost so you don't get screwed over.
On your mileage. I would have thought that you would be getting much better than that. I am getting around 19-21mpg with my 3.5L and I am in a hurry most of the time.
Good luck with your repair.
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