The Ford Focus has two Oxygen sensors, one before the catilitic converter, one after. The one before the catilitic converter is easy to see. When you open the hood, its all the way foreward in the center.
The Ford Focus Wagon has two. One before the catalytic converter (called the upstream) and one after (downstream) Most cars have 2 or more oxygen sensors. Most cars have 2 or more oxygen sensors.
Only two, upstream and downstream.
A 2000 Ford Focus oxygen sensor diagram can be obtained from most Ford dealerships. The diagram can also be found in most Ford repair manuals.
Why?
Just after the air filter, toward the engine.
2 one in front of the converter and one after
where are the oxygen sensors on a 2004 ford escape with a 3.0 engine
There usually on the exhaust header
There are 4 oxygen sensors on the 2001 ford f150 v6.
Typically the pressure sensors are in the top of the fuel tank.
They have two. One is right off the engine on the exhaust manifold and one is after the cat
My 1995 Ford Explorer with 4.0 L OHV has 2 oxygen sensors (Helpfull)