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Oxygen Sensors
Also called as the lambda sensor, an oxygen sensor measures the proportion of oxygen in liquid or gas. Scientists use this electronic device in measuring respiration or production of oxygen. Oxygen sensors are also used in automobiles.
3,729 Questions
How do you replace Oxygen Sensor 2 on a 1998 Nissan Frontier?
I just replaced mine the other day and found out that it is pretty easy. The hardest thing was getting the right parts. You will need to get the o2 sensor remover. It is about $12 at schucks or autozone. I tried to get it out without it and it wasn't happening. The attachment for it is 3/8 inch, so make sure you have a 3/8 inch socket wrench. The first sensor is located in the engine. Pop the hood and check on the right of the engine. There will be a little wire plugged into something that looks like an over sized spark plug. You can unplug the battery, might be smart since you are dealing with electricity, but I did it and it without unplugging it and it wasn't a problem. Unplug the wire. Once it is unplugged, attach your socket to the sensor and twist. It should take a little effort because you only have to change them out about every 100,000 miles. Most of the new one's come with a lubricate already applied, if yours doesn't, then just ask the worker at the auto store and they will show you what one you need. MAKE SURE YOU DON'T TOUCH THE TIP OF THE SENSOR!!!! Any smudge or dirt will mess up you sensor and make more work for you. Once you have the old one off, screw the new one one, tighten it down, then reconnect the wire and your battery if you need to. You should only have to change out the upstream sensor but if you do have to change out the downstream sensor, it is pretty much the same process. Find your down stream sensor, it is located right after you catalytic converter. The downstream will have a long wire that will go follow along the frame of your truck. Follow it until you find where it plugs into. Pull on the plug until it pops out. Go back to the sensor and unscrew it using your socket and wrench. Once it is out, take your new sensor, again DO NOT TOUCH THE SENSOR, and screw it in to its respective place. Run the wire back through the frame of the truck and plug it right into where you unplugged the old wire. FINISHED. If you have a check engine light on, don't worry it will turn off eventually. If it doesn't, just go to schucks or autozone and have them hook up their diagnostic machine and it should turn it off. They will do it for free. The whole process is really painless. I think it took me a total of 20 min to do both and I think it only cost me about $150. That is for the socket, the upstream and the downstream sensor. I know that sounds like a lot of money, but when you consider a mechanic will want to charge you anywhere between $600 and $800, I know because I asked before I changed them out myself, it is really saving you money and you won't have to do it again until another 100,000 miles.
How do you change the oxygen sensor in a 1998 ford contour?
First off a little heads up for ya. There are not one but 4 oxygen sensors on the ford contour. Also the price is a bit high. However if you climb under the car you will find two of them located on the exhaust pipe right at the under the engine. Those are pretty self explanatory. Follow the electrical line one end is a clamp. Unclamp and remove the other from the pipe with a wrench. I can't remember what size. It will take a little bit of time due to tightness of the area. The other two are located over by the exhaust manifold. All are removed the same way. The tricky part is which one is the bad one. Unless you just want to replace them all.
What is the longevity of a 2005 Subaru Forester oxygen sensor?
The obvious answer is "until the warranty is up". Like any part for anything, failures can happen at any time and there is no established lifetime except, as I said, for the warranty period. If you have replaced the majority of light bulbs with compact flourescents, as I have, you know this fact first hand. The package on some touts an 8-year life. I've only lived in my house 5 years and have replaced many of these bulbs.
How do you replace an O2 sensor on your 1999 Ford Contour?
very easy its best to have the socket for an o2 sensor it has a slit down the side to allow for the wire to come out the side available at any auto parts store then you will find it in the front of the engine right behind the radiator it will have 4 wires coming out of it all you do is follow the wires to the wiring harness the detach the clip. then you use the socket to lossen it then unscrew the rest of the way out at this point wheather you bought one with the clip on it that attaches to the factory harness or if it has bare ends on the wires you may need to splice the wires to the original clip then screw it in place and your done 30 minutes tops
If you are talking about the 2.5 V6, then it's not as easy. According to several sources I've looked at while venturing to do this myself, there is debate among the experts, including Ford, Mercury, Autozone, Pep-Boys, Bosh website, Autoparts website and the toothless mechanic standing next to me in the Autozone checkout lane.
I think there are 4. I have found, and replaced 3 of the 4, and the fourth one, or AKA Bank-1 Upstream HO2, is between the firewall and the engine. The guys at the Mercury parts desk say that it's not really an O2, rather a catalytic sensor (Whiskey Tango Foxtrot).
Advice - Get Autozone to run a free diagnostic and tell you exactly which one it is, and replace only that one. I allowed my daughter to manage this thus I got the "Daddy, they're all bad" answer. Of course, being a good pop, I set my brain aside, believed what she said, spent $150 more than I had to, and found a different problem. You might be thinking about now, why would I listen to this person who got suckered by a teen-ager. Well, I'm just sharing something that will maybe help. I don't recommend the Hayne's manual either - it's pretty confusing. The Autozone freebie, so far, is better.
Semper Gumby
Oh - me again, the DA. The funky wrench the previous guy mentioned is a waste on the V6. Just use a (7/8) wrench. However, I may later learn that the funky wrench is the only way to get to the mystery O2. If so, I'll eat crow.
This is specific to the 1995 v6 model (and any other model years that may be identical to it as far as O2 sensors are concerned). The front bank sensor is relatively easy to do with a normal wrench. The rear is another matter as you can only access it from above. At the very least, you will have to remove the rear bank spark plug wires (better ID them with masking tape?) and the ignition coil (not hard). There is a metal track that provides support to a loom of wiring which traverses the engine from side to side, attached to the rear of the engine and close to the fire-wall. Only two small nuts hold that on, but you will have to use some force to remove the mounting tangs of this track off of the studs it is attached to. I was offered the loan of a modifed wrench for the sensor so I used it (the proper socket may have been a better option if you're willing to make the investment, but I don't hope to ever be able to make the comparison). As for the wrench, get a cheap 7/8 combination wrench and cut it down to no more than what you need to fit your hand, keeping in mind you are going to need the box-end of it. Grind over the cut off end to eliminate any sharp edges. Locate the sensor by hand (your eyes won't help here) and follow the wire up to the connector. Disconnect the sensor and hang on to the wire, placing the box end of your wrench over the wire. Follow it down onto the sensor and get the wrench over the sensor nut in such a way that you are going to be able to loosen it. If memory serves, you'll be pushing down to loosen. Once you have cracked it loose and maybe went through a couple more wrench-arcs, it should turn out by hand. Expect to spend about an hour replacing the back one. You might be tempted to do only the front if an engine fault code indicates the problem is the front one, but these are considered normal maintenance items, and you will be doing the rear at some point if you keep the car. .
Where are oxygen sensors located and what are the names - designations - Sable?
Here is the low-down on oxygen sensors, and their location designations explained:
Oxygen sensors are screwed into the exhaust system at various points. Some people say that there are 4 oxygen sensors, but technically, that is not correct. Only the front 2 are considered oxygen sensors.
These oxygen sensors are screwed into the exhaust pipe or directly into the exhaust manifold, one on each bank. Because they are in front of the catalytic converter, this is often referred to as 'upstream'.
The other 2 are actually called catalyst monitors. They are oxygen sensors, but they serve a different purpose. They monitor the activities of the catalytic converters, thus the name, catalyst monitors. They are screwed into the exhaust one on each bank, after, or downstream, of the catalytic converters.
On a 4 cyl engine, there are only a total of two such sensors, the one in front of the catalytic converter is the O2 sensor, the one behind the cat is the catalyst monitor.
The location names for them are as follows:
- On a 4 cyl, the front / upstream is called "bank 1 sensor 1" and the rear / downstream sensor is called "bank 1, sensor 2."
- On a V6 or V8 engine:
- the passenger side bank on a forward facing engine, or the bank closest to the firewall on a transverse mounted engine, is bank number 1, so the forward / upstream sensor on that bank would be "bank 1, sensor 1."
- The driver's side bank (forward facing mount engine), or front bank (transverse engine) would be bank number 2, thus the forward / upstream sensor on that bank would be "bank 2, sensor 1," and the rearmost / downstream sensor on that bank would be "bank 2, sensor 2."
NOTES:
- Use lots of penetrating oil - allow to soak - to make removal easier and avoid damaging the exhaust pipe
- the sensors are screwed directly into the pipe at a 90 degree angle and look like spark plugs with either 8", 12", or 14" wires attached to them
- Tools:
- ** ** it is usually a 7/8ths size wrench
- special-purpose oxygen sensor socket - not expensive, and commonly offered for free use by the auto parts store
- Inspect the condition of wires and that they are not touching any parts of the exhaust system
NOTES:
Rule of thumb: Bank 1 is on the side of the engine with cylinder #1
6 Cylinder numbering:
-----
1 2 3
4 5 6
----
Front of vehicle
AnswerBank 1 is usually the engine side with the number one cylinder. As you have a 6 cylinder and front wheel drive, bank one is on the backside of the motor - meaning near the firewall/windshield. Sensor 1 is the sensor before the catalytic converter. Open the hood, follow the exhaust pipe from the motor towards the catalytic converter. The first sensor you come to is sensor one. Sensor 2 is after the catalytic converter. Bank 2 is the opposite side of the motor from bank 1 (obviously). CorrectionAlso see http://v8sho.com/SHO/TSB0197HO2SServiceTips.htm#fig1 Answer - EditorialAnd before spending any $$ on replacing a sensor, I would test it to ensure it really really has failed! It's very likely someone read the DTC (diagnostic trouble codes) that cited an oxygen sensor reading - but then said something that leads you to believe it's a failed/bad sensor and needs replacing. The vast majority of times that is NOT the problem.Take those codes and research them on the internet! (see "Related Links")
A perfect example are P0171 and P0174 codes - indicate a lean mixture was read in bank 1 & 2 (respectively). On the Windstar, that's a prime symptom covered in Technical Service Bulletin TSB# 03-16-1 (see "Related Questions")
The auto parts store guy had me ready to spend $80 on 2 sensors. - CCoach
AnswerThey are screwed into the exaust system at various points. Some people say that there are 4 oxygen sensors, but technically,that is not correct. Only the front 2 are considered oxygen sensors. They are screwed into the exaust pipe, one on each bank,after the exaust manifold, but before the catalytic converter. Sometimes they are screwed directly into the exaust manfold itself.The other 2 are actually called catalyst moniters. They are oxygen sensors, but they serve a different purpose. They moniter the activities of the catalytic converters, thus the name, catalyst moniters. They are screwed into the exaustone on each bank,after, or downstream, of the catalytic converters.They are all just typical 4 wire heated O2 sensors, nothing special about them. The EPA requires all cars sold in the US after 1996 have heated oxygen sensors.
AnswerAs far as I know the only place OXYGEN sensors are mounted are on the exaust system, either on the header pipe or after the cat-converter. Rarely are they located on the cat-converters themselves. Mostly they will have one electric wire connecting them to the computer but depending on the year and make the will have a two wire connection. I am not certain about the Sable's electrical wiring but the OXYGEN SENSERS postions for FORD/MERCURY are generally on the hot pipes. I hope this helps. Answercheck behind the pass side catalitic converter. (after) the unit. AnswerBank 1 is the front side of the motor (front of car), Bank 2 is the back side of car. (Bank one is actually associated with the number 1 cylinder which just so happens to be on the front of the car for the sable). Sensor 1 is before the catalytic converter, Sensor 2 is after the catalytic converter. Example, Bank 1, sensor 1. The sensor in the exhaust pipe for the front side of the motor before the catalytic converter. AnswerThe o2 sensor is in the exhaust manifold. It looks like a plug sticking out of the manifold and has 2 and sometimes 4 wires coming out of it. Hope this helps Don's Auto AnswerThey are screwed into the exaust system at various points. Some people say that there are 4 oxygen sensors, but technically,that is not correct. Only the front 2 are considered oxygen sensors. They are screwed into the exaust pipe, one on each bank,after the exaust manifold, but before the catalytic converter. Sometimes they are screwed directly into the exaust manfold itself. The other 2 are actually called catalyst moniters. They are oxygen sensors, but they serve a different purpose. They moniter the activities of the catalytic converters, thus the name, catalyst moniters. They are screwed into the exaustone on each bank,after, or downstream, of the catalytic converters. Answerthe oxygen sensors are on the exhaust pipes right before where it hooks into your manifolds. there are 2 of them. one for each manifold. AnswerGenrally the O2 sensor in most vehicles is located in the exhaust system. With the engine cool enough to touch, look at the front of your engine where the exhaust manifold is attached to the engine. The O2 sensor will be attached to the manifold or a little lower where the manifold joins into a single pipe. It will be the only electrical component attached to your exhaust system nearer to the engine. Never remove any nut, bolt, spark plug or sensor from a hot engine. Warping of the orifice may occur as it cools and now you have a bigger problem. If you must, then replace the part immediately.Where is the Oxygen Sensor located on the 2003 Focus Bank 1 Sensor 1?
the bank 1 sensor 1 is located in the header right before the cat ans is easy to access from the front of the car. bank 2 sensor 2 is located after the cat and the heat shield can make it difficult to turn
replace cat May not be the catalytic converter. This engine code can be triggered by any one of the following:
1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged.
2.) The secondary O2 sensor is malfunctioning.
3.) There is an exhaust leak.
4.) The computer unit is faulty
How many oxygen sensor are in a 2005 dodge durango with a Hemi engine before the catalytic coverter?
There is a sensor before each converter and one after each converter.
Where are the oxygen sensors located in a 1999 Dodge Intrepid?
There are four total oxygen sensors. One before and one after the catalytic converter on each side of the engine.
Oxygen Sensor There are actually (4) O2 sensors on your truck. IF you look inside the wheel wells behind the fender liner, right about where the frame is one O2 sensor, the other is underneath the truck about half way back in relation to the transmission. IF you see where the exhaust joints together, you went about 6" too far.
When you start looking at the O2 sensors, they are normally numbered something like "Bank 1 Sensor 1" Bank 1 is on the passenger side; Bank 2 is on the driver's side. Sensor 1 is the upstream sensor (near the frame, between the block and the cat) and Sensor 2 is near the Y-pipe (downstream of the cat).
Normally it is the upstream sensors (sensor 1) that go first. They see the harshest conditions.
Oxygen sensor needs to be replaced does it have to be done immediately?
no but it affects how well your car runs and gas mileage
Where is the oxygen sensor on a 2001 Pontiac Grand AM 2.4 engine?
i don't know if its the same for that year but i do know that on a 97 there is one under the car that bolts on to the exhaust and another between the engine and the fire wall on top of the exhaust manifold which for the 97 is hard to find and get to, i don't know if this will help but its all i can do to help
How do you install a Front o2 sensor on 1998 mustang gt?
With an 02 sensor wrench. You practically have to put the car on a lift and if you're not careful you could strip the sensor itself or the "bung" in the exhaust pipe. I would recommend having it done by a mechanic or atleast have them show you before attempting to do it yourself.
How many o2 sensors does a 2004 cavalier have?
Oxygen Sensor Some vehicles have (2) and some have (4) O2 sensors.
When you start looking at the O2 sensors, they are normally numbered something like "Bank 1 Sensor 1" Bank 1 is on the passenger side; Bank 2 is on the driver's side. Sensor 1 is the upstream sensor (near the frame, between the block and the cat) and Sensor 2 is near the Y-pipe (downstream of the cat).
Normally it is the upstream sensors (sensor 1) that go first. They see the harshest conditions. You will need; Oxygen Sensor Socket Anti-Seized Penetrating Oil I have even used a small plumbers propane tank and heat it up and it help get them free. Sometimes it will take 15 minutes or take a few hours it depends on your luck...
How many oxygen sensors are in the 2004 Lincoln ls?
2004 Lincoln ls has 4 oxygen sensors 2 upstreams and 2 down streams
check fuel pressure regulator
What is the hold light on a 1998 Kia Sportage?
You have two lights on dashboard which are linked to your auto transmission, 1. POWER which will hold the gears for a longer period during going up in gears for higher accelaration, and 2. HOLD when climbing hills or overtaking the hold button will drop down a gear and maintain that gear until button is released, just helps to maintain gear and accelaration instead of the gear dropping halfway through overtaking or climbing. Both of these buttons are on your shifter, Hold, on side of shifter at top and Power will be a button left hand side of base plate. Hope this helps, Iain.
Where are the oxygen sensors located in a 2001 dodge ram truck?
They are on either side of the catalytic converter.
They are on either side of the catalytic converter.
Where is the bank 1 sensor 2 on a 1997 Dodge Dakota?
That is the O2 sensor behind the catalytic converter.
