If the Trooper has the 3.5L v6, there are 4 SO2 sensors. There are two banks right and left, or bank 1 and bank 2 respectively. Then there is a sensor upstream from the catalytic converter on each bank (sensor 1) , and one down stream (sensor 2).Hope this helps/
The exhaust system has two banks. Each bank has two oxygen sensors. Bank one is on the driver's side. Oxygen sensor 1 is between the exhaust manifold and the catalytic converter. Oxygen sensor 2 is behind the converter.
According to my Chilton repair manual : " the oxygen sensor is used with the feedback system to sense the presence of oxygen in the exhaust gas and signal the computer which can reference the voltage signal to an air / fuel ratio " ( that applies to bank 1 - passenger side , and bank 2 - drivers side , sensor 1 ) banks 1 + 2 , sensor 2 is downstream of the catalytic converters and are called catalyst monitors
The Tyra Banks show is on Oxygen along with reruns of ANTM on Sundays.
Bank 2 is the bank (you have a V6 engine with two banks of three cylinders) with cylinder #6. This is the left hand side of the engine. If you stand there facing the belts and but your two hands out, your right hand will be near bank two and your left hand will be near bank 1. Follow the exhaust system from the engine back toward the tailpipe. The second oxygen sensor you encounter is bank 2 sensor 2. Unplug the sensor. Use an oxygen sensor wrench or oxygen sensor socket to unscrew the sensor. If the sensor won't unscrew easily, start the engine and rev it up to abour 2500 RPM for about 3 minutes, then try unscrewing the sensor with the engine still running. Don't burn yourself. If your tool won't fit well, use a 6-point 7/8 inch box wrench. You can cut the sensor lead if necessary as you've already determined that the old sensor is no longer useful. Screw the new sensor in, then plug it in. Reset PCM codes.
Open the hood, look down at the exhaust manifold and find the device that looks a little like a sparkplug; it should be screwed into the exhaust manifold near the junction... that's the oxygen sensor.Trace back the wire to a plug and disconnect it.Unscrew the oxygen sensor. It's usually easiest if you have the specially designed socket, but it's not absolutely necessary.SAVE THE WIRE!!! Most replacement oxygen sensors will require that you splice the wires from the sensor onto the wires of the original plug assembly.AFTER you've spliced the wires, put the new oxygen sensor in place.Now do the same to the OTHER side... the L300 has a V6 engine. A V6 uses 2 exhaust banks and 2 oxygen sensors. You'll save yourself a boatload of trouble if you replace them in pairs.
The O2 sensor is located on the exhaust, most Cherokee's have 2 exhaust banks, so there should be one on each side of the engine. Find a wrench to fit it and screw it out, there should be an electrical connection running to it so find where it connects and disconnect it. Reverse for installation.
Sensor 1 is the sensor before the cat. converter and bank 2 is the side of the engine Cylinder #2 is on. Not sure of your specific vehicle, but I have found this to be the general rule with sensor #'s and banks.
The camshaft position sensor is located under the hood, beneath the engine cover. The engine cover must be removed with a wrench to access the two sensor banks and their wiring harnesses.
The 4.0L can have one or two banks. If it has two, bank one sensor one is the sensor closest to the front that is screwed into the exhaust manifold. If only one bank it will be the only sensor in the exhaust manifold.
Oxygen sensor is on the exhaust. It controls fuel injectors, and if bad will cause "check engine" and will fail at smog test. They cost about $50. I replace them every 2 years. Right and left are determined from sitting in the drivers seat. Right is passenger in the USA.
The payor can specify the length of time the check is vaild for - most banks will balk at cashing checks that are more than ninety days old.
P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) does not necessarily mean the O2 sensor was bad, and for sure does not mean the catalatic conveter was bad. Stop throwing parts at this problem and take it to a professional, before you replace any more unnessary parts. You would be money ahead if you had done that is the first place.
There are four oxygen sensors one on each exhaust manifold or bank of cylinders and one after each cat for both banks of cylinders
what does system to lean banks 1 and 2 ? Multiple cylinder misfire?
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Performance parts usually do not help fuel mileage. A cold air intake can help a little bit, but make sure to keep the oxygen sensor clean as some filters can dirty it. You could also look into purchasing a Banks performance kit if it is available for your truck.
It's not very likely that a 4 cylinder will have 2 banks, unless the engine is in a "v" confinguration. Haven't heard of a V-4, but it's possible. Oxygen sensors for inline engines are on the exhaust manifold, just past the point where all 4 cylinders have joined. There are two . One is ahead of the converter & one is below the converter. They are called upstream & downstream sensors.
bank 1 is in the rear of the vehicle(near the fire wall) and sensor 2 is located near the rear convertor on that banks exhaust pipe.
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The expression burst their banks means that they overflowed their banks.
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Bank 1 is always the bank where cylinder No. 1 is, or in this case, the driver's side (left) bank, and Bank 2 is the opposite (right) bank. After the point where the pipes meet, everything is Bank 1. Now, counting O2 sensors. One is located by the left manifold, which is Bank 1, Sensor 1 (scanner shows B1-S1). Moving back, the sensor in front of the catalytic converter after the Y-pipe is Bank 1, Sensor 2. After the Y, it's all Bank 1, but we still count the sensor in the manifold as 1. So now the sensor behind the catalytic converter is Bank 1, Sensor 3 (scanner shows B1-S3). On a dual exhaust system, the banks stay 1 and 2 all the way back. For example, on the same truck with dual exhaust ... Bank 1, Sensor 1 is in the left manifold; Bank 2, Sensor 1 is at the right manifold; Bank 1, Sensor 2 is behind the driver's side converter; and Bank 2, Sensor 2 is behind the passenger side converter. If automotive engineers decide to add more O2 sensors, they will continue the numbering in this fashion.