One is the Head Temp sensor, other is either a knock sensor, or on the throttle body it's the cold start injector
two
There are two oxegen sensors on the 99 V70 GLT.
two on before the catalytic and one after
There are two sensors one in the engine block and one behind the crankshaft pulley
Pretty expensive, apparently. My check engine light was on; The dealer diagnosed it as "the front and rear oxygen sensors on bank 1 not working." Charged me $223.52 ea. for the two sensors and just about $300 for labor. I was searching to see what others have been charged.
There are two o2 sensors on this car.
the two sensors on a transmission communicate with the computer to the engine and tells the transmission when to shift up or down....
There is no Volvo car with a two cylinder engine.
i want to put used rebuilt engine on 1990 integra but new used engine only has two sensors
The 2.5 has 2 O2 sensors (both on top of the engine) and the 3.5 has 4 O2 sensors (two on top, and two under the car).
Assuming you have the V-6 engine, it has two downstream (after the cats) O2 sensors and two upstream (before the cats) Air/Fuel Ratio Sensors. So the answer to your question is two O2 sensors.
There are two oxygen sensors screwed into the exhaust on the rear of the engine.