According to my Chilton repair manual engine wiring schematics there is ( 1 ) on the
4 cylinder and ( 2 ) for the V6 engines in a 1994 Ford Ranger
motorcraft . com just shows ( 1 ) oxygen sensor for all available engines in a 1991 Ford Ranger
I'm not a mechanic / technician but on a 1988 Ford Ranger there might be ( 1 ) oxygen sensor ( upstream sensor )
The 1994 Ford Ranger pickup truck map sensor is located behind the dashboard, on the passenger side of the passenger compartment. The map sensor is contained in a dust free box.
According to www . motorcraft . com ( no spaces ) the IAT sensor is a thread in type for the engines in a 1994 Ford Ranger - so threaded into the upper area of the intake manifold somewhere
their is more than one oxygen sensor but the one that is probly bad is on the exhaust system. otherwise I would check the map sensor.
under the hood driver side
the o2 sensor is located on the exaust manifold
The O2 sensor after the catalytic converter.
you can breath
It just has ( 1 ) oxygen sensor , before the catalytic converter ( upstream )
I'm not a mechanic / technician but the engine wiring schematic in my Chilton repair manual for the 2.3 in a 1994 Ford Ranger does not show a knock 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 .