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How can you tell that you put the o2 sensors on right from upstream and downstream?
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What is difference between upstream and downstream in relation to oxygen sensors on vehicles?
Upstream will be the closest to the engine, and are used to sense the air/fuel ratio and tell the computer how much fuel to inject. Downstream sensors are used to verify the upstream sensors and convertors are functioning correctly, so they are located after the convertors.
How many O2 sensors in a 98 Mazda Protege?
There are 2 sensors 1 upstream and 1 downstream to tell which one is bad use a scan tool if the code says bank 1 sensor 1 it's the upstream if it's bank 1 sensor 2 it's the downstream
How do you tell if an oxygen sensor is upstream or downstream on a '96 Geo metro I just have one.?
The closer to th engine is upstream and the farther is downstream Before the cat upstream After the cat downstream.
How do you know if catalytic converter is faulty?
depends on the vehicle, you usually can tell by using a scan tool and watching the O2 upstream and downstream sensors, if they read the same the cat is faulty, the rear or downstream sensors should be a straight line if the cat is ok
How do you tell if an oxygen sensor is upstream or downstream on a 2002 Chevy silverado 1500?
Upstream would be before the catalytic converter. Downstream would be after the catalytic converter.
How do you know which o2 sensor to change when you get the proper diagnostic on a 99 CLK 430 AMG?
A "proper" diagnosis will tell you wether it's right bank, left bank, upstream (before cat) or downstream (after).
How can you tell if the upstream or the downstream oxygen sensoron a 2000 Honda Civic ex?
The up stream is closest to engine and down stream is farest from engine
Can you tell me how many oxygen sensor are on a 1998 ford expedition 5.4?
I believe there are 2 oxygen sensors that are used for air / fuel ratio and 2 oxygen sensors that are downstream from the catalytic converters and are called catalyst monitors
Where is the downstream heated oxygen sensor heater circuit fault bank for a 1996 ford f-150 in line six cyindler?
There is no such thing as a "circuit fault bank." That was the terminology your scan tool used to tell you that there is a fault in the downstream heated oxygen sensor circuit. There are three sensors screwed directly into the exaust system. Two you will see under the hood, screwed into exaust manifolds. Those are the upstream oxygen sensors. Now get under the truck. Find the lone sensor that looks like the other two, screwed into the exaust sytem after the catalytic converter. That is the downstream oxygen sensor. The downstream oxygen sensor circuit that there is a fault in, includes that sensor, and all the wiring in that circuit all the way back to the PCM (computer), and includes the PCM itself.
Where is the oxy sensor on a 2002 escort?
There are two. One is upstream from the catalytic converter and the other is downstream from the catalytic converter. They look like little plugs with wires going into them. The upstream one is just past the exhaust manifold. The downstream one is past the converter and can be seen from under the car. It 's in front and has a couple wires going into it.. They look like spark plugs but are different. It is hard to tell you where it is at because obviously you don't have any knowledge of the different parts of a car.
How do you know which oxygen sensor is not good from a Chevy Venture?
The code thrown will tell you which one is bad. Codes p0130 thru p0135 all refer to the upstream sensor under your coil packs. Codes p0136 thru p0141 all refer to the downstream sensor under the van.
How many oxygen sensors does a 2003 jeep grand Cherokee have?
It depends if it is a California emissions model. If it is not there should be 2 O2 sensors. One before and one after the cat. converted. If it is a Cali emissions model then there are most likely 4 O2 sensors. Two before the 2 mini cat. converters and 2 downstream of the cat converters. The check engine error codes will tell you which bank and sensor number. I have a Grand Cherokee limited 2004 Cali model and there are 4 O2 sensors. The link (in realted links sections) will show you where the o2 sensors are located and how to change them.
