Hi, i have a 1995.5 passport V6 auto, and its going to be 90K soon. I know i need to change out my oxygen sensor, how many do i have and where is it located at? Thanks

why change at 90K. if your MPG hasn't gone down I wouldn't worry aboutit.

Since it's <1996, 4cyl and 6cyl has 1 oxygen sensor. 1996+ will have 3 or 4. Yours will be threaded into the exhaust system upstream somewhere between the exhaust manifold(s) and catalytic converter.

G/luck
Joel