How can you get to the oxygen sensors

Yes with a Hoist and a garage. You will also need a special socket/wrench to remove the old O2 sensor and to put a new one on. Trying to get to these while laying on your back in the drive way is next to impossible. If there is a rent-a-bay near you, you should call them up. The O2 sensors are on the "y" pipe, in front of the Catalitic converter. Best of luck

Remove the Ignition coils to get to the Upstream Sensor The Downstream Sensor is underneath the van just past the Catalytic Convertor. Good Luck.

I found this cool automotive website you should checkout. www.wrenchxd.com