Oxygen Sensors

It could be bad with out turning the light on.

I was told it varies with the vehicle's Make i have Ford i was told to drive 40 miles we drove 55 so we were told to drive 40 more miles haven't done that yet. i think the o2 sensor has to accumulate enough carbon before it's considered "Ready".

There are four in total. One before and one after the catalytic converter on each side of the engine.

Ford, Honda, and Lexus all offer cars with variants designated as LX. This question cannot be answered unless the make and model of the car are specified.

Upstream and downstream refers to the supply chain of an industry. For example, if you're looking at a distribution plant then the manufacture would be downstream and the retailer would be upstream. Events or processes that happen before whatever is being looked at is downstream and whatever happens after is upstream.

The "check engine" light would illuminate.

By breathen inn

its cheaper to manufacture a part that is not of high quality and sell it at a lower price. This way high volumes of sales can be achieved because the lowest price sells, people are cheap and cars are manufactured so that they hold up during their warranty period.

There for it goes bad because there is no money in developing one that lasts a lot longer. The ceramic bits break because the thing is suffering a lot of heat changes and the unburnt gasses themselves will damage the sensor.

Depend on the year, and vehicle. There will be either 2, or 4. Half before the cat, and half after.

Bank one is the side of the engine with cylinder number one. Position two is after the catalytic converter.

your trans am has 3 oxygen sensors one on each exhaust manifold and one after the catalytic converter

Acura TL 2.5 litre with straight 5 cylinder engines has only one exhaust manifold similar to 4 cylinder engines. Hence, it has only one bank. Therefore, it is fitted with two oxygen sensors only. The first one is around the exit of the exhaust manifold (follow the manifold to the start of the pipe) and the second one screws into the catalytic converter. The first sensor is called bank 1 sensor 1 and the second one is called bank 1 sensor 2. Hope this helps.

It cost me $850 to put 2 oxygen sensors on my 2000 i30 Infiniti at Miller Infiniti. I had to do this because my check engine light was on and a smog test was due. It would not have passed if I did not do this. They are probably "crooked", but what can you do?

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The O2 sensor (oxygen sensor) measures the amount of oxygen present in the exhaust gas. For proper combustion to occur, you need 14.7 grams of air per 1 gram of fuel. The car has sensors to measure the amount of air flowing into the engine, and can take a pretty good guess at the amount of fuel going into the engine, so it can do a pretty good job of keeping the air to fuel ratio around the 14.7:1 mark. When the engine is cool or under heavier load, that's what it does (it may even run rich, or more fuel than needed, for extra power). Once the engine warms up, and you're cruising, it will go into closed-loop operation. At that point, it uses the O2 sensor to sense the amount of oxygen in the exhaust, and fine tune the amount of fuel going in. If the O2 sensor is not working, it can't do this fine tuning. So long as it stays close to 14.7:1, you're ok. However, if it starts wandering, you can have problems. Too rich and your catalytic converter can destroy itself. Running rich will release a lot of unburned hydrocarbons (fuel) because there isn't enough oxygen to burn them. Those will go into the catalytic converter, which will do its best to get rid of them, but the better job it does there, the hotter it will get, and could melt. You'd likely have problems with any emissions testing. Plus, your gas mileage will suffer. On the flip side, if you drift lean (not enough fuel), your exhaust temperatures will rise (unless you go way to lean, in which case you may start misfiring) and you might get your cat (or your engine) too hot, with obvious consequences. The extra heat and oxygen will allow the formation of increased levels of nitrous oxides (another emission problem). The only good side to this is that running lean can help your fuel economy (assuming everything else in your car can handle it). So yes, a malfunctioning O2 sensor can damage your car.

Oxygen sensors are located on before and after the catalyst converter on top of the tipe pipes and after the catalyst converter on the side. It looks like a spark plug.

The bank 1 sensor is located front and center on your engine. It looks somewhat like a spark plug. It has 3 wires leading into it from a wiring harness located about 12 inches to the left of the sensor. It is at the top,front of the engine,partially covered by your exhaust shroud.

A dealership can tell you if you give them the VIN number. usually if look under the hood, there is vehicle emissions label that will state that the vehicle is legal for sale in California, or that the vehicle conforms to California regulations.

Bank one is the side that includes cylinder number one. Sensor two is post catalyst.

Supply chains are the suppliers, manufacturers, distributors and transportation modes that move products and services from the source of components and raw materials to the customer. Product flowing from the source toward the customer is flowing downstream. Activities that are performed previous to a specific point on the supply chain are upstream activities. (source: http://www.ehow.com/info_8745500_upstream-downstream-supply-chain-activity.html)

No it will not because NOX is in the engine and picks up spark knock and the ECM adjusts the timing as needed. The O2 Sensor is in the exhaust and measures the air to fuel ratio then the ECM adjusts.