Where are the front 02 sencers located - 2003 Ford Windstar

There are 4 oxygen sensors on the Windstars They are divided into 2 banks of 2.
- Bank 1 is the for the rear 3 cylinders of the engine
- Bank 2 is for the front 3 cylinders.

Bank 1 / Sensor 1 (upstream) is located just below, in the pipe, the exhaust manifold on the back of the engine.

REMOVE TIP: you may have to bend part of the transmission heat shield out of the way - be sure to put it back when done.

Bank 1 Sensor 2 (downstream) is located just past the drivers side catalytic converter. Bank 2 Sensor 1 (upstream) is located just below the exhaust manifold, in the pipe, at the front of the van - access is from the top. Bank 2 Sensor 2 (downstream) sensor is located just past the passenger side catalytic converter.

NOTES: * Use lots of penetrating oil - allow to soak - to make removal easier and avoid damaging the exhaust pipe

* The sensors are screwed directly into the pipe at a 90 degree angle and look like spark plugs with either 8", 12", or 14" wires attached to them




Hope this heslps (remember tp rate this answer).

Have you looked for them?

In the Exhaust Converter