The 5.0 liter V8 has ( 4 ) oxygen sensors
The 4.0 liter EFI ( which is an over head valve / pushrod design ) has ( 3 ) oxygen sensors
Note: The 2 upstream oxygen sensors are used for adjusting the air / fuel ratio of the engine , the other oxygen sensor (s) are called catalyst monitors and monitor the performance of the catalytic converter(s)
On a 1995 Ford Explorer : There are ( 2 ) oxygen sensors ( I believe there is one sensor in the outlet of each exhaust manifold )
On a 1996 Ford Explorer with a 4.0L engine, the oxygen sensors are located in two main areas. The upstream oxygen sensor is situated before the catalytic converter, typically on the exhaust manifold or the front pipe. The downstream oxygen sensor is located after the catalytic converter in the exhaust system. Both sensors play a crucial role in monitoring and optimizing the engine's fuel efficiency and emissions.
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My 1995 Ford Explorer with 4.0 L OHV has 2 oxygen sensors (Helpfull)
That would depend on what year of Ford Explorer and which engine you have ( my 1995 Ford Explorer with the 4.0 liter OHV , V6 engine has ( 2 oxygen sensors )
4 ======================================================= The above answer is correct if you have the 5.0 liter V8 engine in your 1996 Ford Explorer , but if you have the 4.0 liter EFI , V6 engine ( VIN " X " ) there are ( 3 oxygen sensors )
there are 4 o2 sensors
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It has ( one oxygen sensor ) on the 1991 and 1992 Ford Explorers
The oxygen sensors located before ( upstream ) of the catalytic converters are used to " sense " the amount of oxygen in the exhaust to adjust the air / fuel ratio for the engine
A 1994 Explorer has 2 oxygen sensors, they are either screwed into the exhaust manifolds at their outlets or into the ehaust pipes near the engine.