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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 to fix a speedometer on a 1984 Oldsmobile 98 regency?

You have to find out what's wrong with it first If the odometer is working then the speedometer "head" needs repair. This requires some disassembly to get the speedometer out of the dash. If the odometer is not working it is most likely the inner cable to the transmission. Take the cable loose from the transmission and remove the gear. Check the gear for broken teeth and a worn out square hole where the cable fits into it. Try to pull the inner cable out by hand or a little help with pliers. If it is broken it will come out. There is a clamped end and stop ring at the speedometer end that will keep that end of the cable in the sheath. There is a possibility that the clamp has come loose at that end also. It would help to remove both ends so you can turn the cable at one end and have someone check the other end for turning also. An inner cable can be replaced. Sometimes a sheath that old will have rust damage and need replacement also. Put some speedometer cable lubricant on the cable while you are working on it and if you replace it.

How many oxygen sensors on a 97 Hyundai Elantra?

There are 2 oxygen sensors.1 is in front of the catalytic coverter and 1 is located behind the coverter

Which is the Bank 2 sensor 1 on a 1996 Tahoe?

Bank 2 is the passenger side of the engine. Bank 1 is the drivers side of the engine.
02 sensor 1 is the sensor that is the closest to the exhaust manifold that bolts to the side of the cylinder head.
Sensor 2 is the one that is closer to the exhaust muffler.

If there is a code for map sensor and 02 sensor does this mean the cat converter is bad or plugging up?

'88 o2 sensor not grounded.if the sundance is an 88 it will have a three prong lead. Plymouth realized that it was not getting enough ground (mopar EEK forum) I've wrapped a wire aroung mine and ran it directly to the negative terminal. code 52 is gone. As to the map senor. try this forum

http://mopar.kmzefamily.net/ecu/index.HTML

check it out and let me know. how does the car drive? * the easiest way to test for a bad conerter is to unplug ita t the manifold. you will need two new bolts since the old ones will snap off. take for a drive. Warning, it will be VERY loud. bring license and registration, as well as a good story. before heading out clear all codes by disconnecting negative terminal for 10 seconds. if at the end of the trip the codes are gone, then you have your answer.

Where is the oxygen sensor heater circuit fuse located on a 96 Mercury Sable?

In the engine compartment relay/fuse panel. It is either position #27 or #28. One page in my book shows #27, the other page shows #28.

Does a bad O2 sensor cause the check engine light to turn on?

Yes, a bad 02 sensor can cause the cheek engine light to turn on.

It happened to my Honda Accord 96. Autozone OBD states that I have a "Malfunction Oxygen Sensor". I disconnected the negative battery cable and the check engine light went off. Until now it did not came back. It is more than a month now. I save a lot of money.

I heard an Auto Zone commercial yesterday saying that if "your check engine light comes on in your car, then come to Auto Zone and buy a new oxygen sensor" and that would fix the problem.

I went TO 2 Auto Zones today and they both checked my check engine light. both said that my O2 sensors are lean or bad. I further discovered that just replacing the sensors which by the way for 2000 Ford Windstar LX 9 parts are about (129.00) with labor about $250.00 is not a guarantee that the check engine light will go out. However if you do go to Auto Zone be sure to ask them for the codes and what they mean. The best thing you can do is take your care to a certified garage and have them to do a computerized diagnostic, in most cases it will cost you between $70.00-100.00, I will save you a great deal of heart ache $$$ later. There are approximately 900 items that can cause your check engine light to come on. Also, someone suggested disconnecting the battery for a minimum of 6 hours, reconnecting it and driving the Van 250 miles and see if the light goes out. will let you know how that works out.

AnswerSee "Related Questions" below for more...

Is there anyway to be able to see or test a wiring harness to see if it needs replaced on a 1985 5.0 mustang?

I'm thinking your car was in a wreck and it may be shredded right? You can see the main harness if you look for it from the the fuse boxes to everywhere else it goes and the branches on it are like a tree. It is usually taped up and wrapped in black. Testing is easier than replacing if it is not destroyed. You need an electrical diagram and learn where the components are located that the wiring goes to. And learn where that circuit goes to the next terminal point or fuse point. You check it point to point with a volt meter if voltage is applied or an ohm meter if you're looking for a completed circuit which is basically a short. Most electrical failures are not because "it's got a short in it" - but because a connection has broken loose in some way and somewhere.

Where are the TRANSMISSION input and output speed sensors on a 2002 Dodge Intrepid?

They are on the driver's side of the transmission, and require a 1 inch deepwell socket to remove, and you may need some extensions to reach it.

Replaced the upstream oxygen sensor and knock sensor but car still stalls?

maf sensor or idle air control/ecm. force-clean fuel injectors and reset engine timing and base idle

Will it hurt to cut off the catalytic converter and left it off of your 1988 dodge daytona?

Removing a catalytic converter and not replacing it is highly illegal.

Removing a catalytic converter and not replacing it is highly illegal.

What is the bank 1 sensor 2 on Honda Civic?

ho2s12 heater condition ( heated oxygen sensor) O2 sensor located in the middle. senosor #2 not to be confused with "air fuel ratio sensor" as most mechanics will confuse them at times and not fix your lights on dash wich can be annoying.

Will the cam sensor effect the cruise control?

Yes it could, if it is setting codes it will affect the cruise.

How do you replace Honda Passport oxygen sensor?

There are four O2 sensors on a 1998 Honda Passport, so when you have it put on a computer and it shows up "O2 Sensor" make sure to get more info such as Right bank, Left bank, etc, or it will be just a shot in the dark which one is bad. They are pretty easy to find just follow your exhaust system out from the engine.

Where is Bank 1 O2 upstream sensor on a 98 Ranger?

On a 1998 Ford Ranger :

Assuming you have either the 3.0 or the 4.0 liter V6 engine :

Bank 1 is the passenger side of the engine

Sensor 1 ( upstream sensor ) would be close to the engine before the

exhaust enters the catalytic converter ( it might even be in the outlet of the

exhaust manifold )

How do you replace the pre-catalytic oxygen sensor in your 1997 S-10 blazer with a 4.3 liter V6 engine?

It unthreads much like a spark plug. I would unplug the electrical connection then cut the wires off at the sensor. This will let you slip a 7/8" box wrench over the sensor. Remove by turning counterclockwise, it may take some force to break loose.Install the new one using a 7/8" open end wrench and tighten it as you would a spark plug.

Where can you find the O2 sensors on a 2004 f150?

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.

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…

Where is the oxygen sensor on a 1994 Plymouth sundance?

It is screwed into the exhaust manifold on the rear of the engine.

How many oxygen sensors are in a 2002 Mitsubishi Diamante?

4, two front and two rear, I recently had to change the rears anyway, since it was misreading its information and causing the service engine light to come on and they wouldn't pass my emissions inspection.