Some modern cars like the maxima even have four O2 sensors. The reason some cars have more than one O2 sensor is to be able to moniter the level of unburnt hydrocarbons that are present before the catalytic converter and the level present after the catalytic converter, this is useful for determining how efficient the catylytic converter is at burning off these unburnt hydrocarbons present in the exhaust gases. The computer is also able to use the information from multiple O2 sensors to get a clear reading of the engines air to fuel ratio so it can deliver a more precise amount of fuel to the engine.
There are two of them.
There are two.
4. Two before the cats and two after.
Two, one in fron of the catalytic convertor and one behind it.
There are 2 oxygen sensors.1 is in front of the catalytic coverter and 1 is located behind the coverter
the part no. are 64,2387,79856
They are all threaded into the exhaust system at various points.
there are two 02 sensors on a 97 they are easy to replace,i have seen these sensors for around 90$ which is high for an 02 sensor but can easily be done yourself, if you can find a low mileage one in a junk yard you could do it for a few dollars
on a 3.5, there are 4. 2 are right after the manifold, and 2 are after the pre-cats.
Lincoln Mark 8s 96 and newer have 4 Oxygen sensors, two per bank of cylinders (Two on the drivers side, two on the passenger side) one before the catalytic converter and one after the catalytic converter.
There are a total of four Oxygen Sensors: one in each exhaust manifold near the motor, and one on either side (upstream & downstream) of the catalytic converter.
There are four oxygen sensors screwed into the converter assemblies. You need to know which one is faulty before attempting to replace them.
None in the muffler, one oxygen sensor before and one after the catalytic converter.
One... It's screwed right into the exhaust manifold. It's very easy to get to but can be hard to get the old one out... They make special sockets for O2 sensors. I own a 97' geo but have two sensors... From 1996 on, the system is OBD-II, which has two oxygen sensors, one on the exhaust manifold and a second one on the catalytic converter. Pre-96 only have one on the exhaust manifold. The sensor wiring varies with 3-pin and 4-pin variations.
Oxygen sensors either work or they don't. If they don't, the check engine light will come on and indicate an oxygen sensor problem. If they're fine, none of that will happen.
I am trying to change the bank one downstream oxygen sensor on my 97 land rover dicovery were is it located
There is not one on this vehicle.
You have several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
96 and 97 Corolla and Prizm are the same, but, they have an extra crankshaft sensor, that the 93, 94, and 95 does not have,
on a 97 you should have four sensors and they are located on the exuast one on each down pipe one right before your exuast comes together and one right after it comes together
The pump and most of the sensors are inside the transmission