My 1995 Ford Explorer with 4.0 L OHV has 2 oxygen sensors (Helpfull)
That Vehicle has 2 oxygen sensors.
Check
I'm not a mechanic / technician but on a 1988 Ford Ranger there might be ( 1 ) oxygen sensor ( upstream sensor )
According to fordparts.com the 1989 Ford Mustang GT has ( 1 ) oxygen sensor
There are 2 heated exhaust gas oxygen sensors , 1 screwed into the outlet on each exhaust manifold on a 1993 Ford Ranger 4.0 L .
Well, honey, a 1999 Ford Ranger with a 4.0 engine typically has two oxygen sensors. One is located before the catalytic converter (upstream sensor), and the other is after the catalytic converter (downstream sensor). So, there you have it, two sensors keeping an eye on that engine of yours.
I was looking in my Chilton book at the engine wiring schematic for a 1993 Ford Ranger 2.3 liter 4 cylinder and I only see ( 1 ) heated oxygen sensor
there should be 3/1 on the left header then 2 going back
A little more information please ( what year of Ford Ranger , what size is the engine ) As far as I know there could be as many as four oxygen sensors or as little as one depending on the year and engine size
what does a fuel pump look like in a 1989 ford ranger 4 cyl.
where are the oxygen sensors on a 2004 ford escape with a 3.0 engine