I own a 2007 jeep compass 2.0 Liter. It failed the georgia admissions test and the code was a slow response from the backstream o2 sensor. I know that it is the back sensor located behind the catalyic converter. Would anyone be able to explain to me how to change it. I've heard it is not very difficult and i need to do it ASAP in order to get my car registration. Jeep dealer mechanic wants $360 to fix it ???? Crazy since the part is only $25.00. Can anyone help me???