this thing looks like a O2 sensor to me--are we talking about the same thing?? I know they monitor air/fuel ratios, but I've never heard them called a air/fuel ratio sensor...
847947
No, an O2 Sensor and an Air/Fuel Sensor are NOT the same thing. They look exactly alike and SOME are interchangeable but there are slight differences. Consult your vehicles parts lookup system to get the correct part number of the sensor your application calls for. Do NOT use a cheap aftermarket or "Universal" sensor - you're asking for trouble. Fix it ONCE, fix it RIGHT.
71384
This sensor is for cars built for Calif. emissions. You may have a "Calif." car though it hasn't been within 2,000 miles of the place. My 2001 Camry takes this "Calif." version though it was bought in Georgia so check the emissions tag on the underside of the hood for whether it says it meets "US" or "US AND Calif." emissions. In 2001 the US standards just required an oxygen sensor, the Calif. one required the air/fuel ratio sensor ($$$). Mine says US and Calif. Luckily the connectors are different so I couldn't plug in the "US" one I bought first. You'll make a really big mistake if you get the Universal fit version of the "US only" sensor and unwittingly splice it into a "Calif." car.
1781281
Is there an O2 sensor on the pipe that the fuel module connects to? It should work perfectly as it does on my Yamaha Raider, and I have similar modifications.
264980
There should be two o2 sensors. One before the cat and one after. For my car (03 Focus) the 15717 went before the catalytic and the 15719 went after.
881472
That doesn't sound right. I'd double check the vent tube and oxygen sensor. At the very worst you would not lose mpg, only gain hp.
1283268
Each vehicle is different in the amount of O2 sensors they have. Could be 1-4 or even more.If you know you only have two, the upstream is before the converter and the downstream is after it.You need to know which is bad before you replace it. Most parts stores can scan you vehicle and tell which one is suspect.
260190
Any good? I am not sure what you want to know. They are Bosch sensors. They are (to my understanding) OEM. As long as you buy the correct sensor (up/down stream cabling is of different lengths) for the correct placement/problem, they work fine. I purchased two upstream pieces because they were due to be replaced. I had gotten several codes to that effect. No codes of that type since.IF you plan on a downstream sensor resolving 'inefficient cat' codes..you will almost certainly be disappointed. The O2 sensor is not likely the cause of those codes. Such codes are MORE likely to be a cat failure: Particularly the left (driver's side) cat on an E38. Any good? I am not sure what you want to know. They are Bosch sensors. They are (to my understanding) OEM. As long as you buy the correct sensor (up/down stream cabling is of different lengths) for the correct placement/problem, they work fine. I purchased two upstream pieces because they were due to be replaced. I had gotten several codes to that effect. No codes of that type since.IF you plan on a downstream sensor resolving 'inefficient cat' codes..you will almost certainly be disappointed. The O2 sensor is not likely the cause of those codes. Such codes are MORE... » Read More Any good? I am not sure what you want to know. They are Bosch sensors. They are (to my understanding) OEM. As long as you buy the correct sensor (up/down stream cabling is of different lengths) for the correct placement/problem, they work fine. I purchased two upstream pieces because they were due to be replaced. I had gotten several codes to that effect. No codes of that type since.IF you plan on a downstream sensor resolving 'inefficient cat' codes..you will almost certainly be disappointed. The O2 sensor is not likely the cause of those codes. Such codes are MORE likely to be a cat failure: Particularly the left (driver's side) cat on an E38. « Show Less
1239977
Yes it's a complete y less the O2 sensors. It came with gaskets too. Hope this helps.
1417199
Hey James, I just recently(within the past month and a half) replaced my o2 on my 02 Toy Tacoma 4x4 3.4L with an automatic tranny and this exact sensor #234-4189, working great for me. I am told by my mechanic that it is the same one for the manual trans. Hope this helps dunc g
1627081
Very cool. Thanks. Im hoping its the temp sensor as I already replaced the element so far and thats the only thing left. Thanks again
816060
It was the rear O2 sensor on my 2007 Kia Spectra. Thought it was the front. I replaced it anyway but ended up buying a front sensor later.
281234
Yes. The O2 sensor does just that. It measures the O2 in the exhaust. E-85 is just ethanol and gasoline. Tuners who use this sensor do not use E-85 as we are trying to maximize horsepower by providing the best tune possible using real gasoline or race fuel and are not as concerned with saving the world. E-85 does not have as much energy per given volume as high octane gasoline, so why would you use it if you are trying to win races?
688681
I searched everywhere for the throttle position sensor with no luck. It appears to be integral to the throttle body. However the car runs great now so it was worth the purchase.
559025
Just because you have an o2 sensor code it does not always mean the sensor is bad. You may have a problem with the wiring or an exhaust leak
559030
Not sure. Occasionally the O2 sensor throws a code for other systems being out of spec. It's not always the sensor itself. Also on O2 sensors, get someone to clear the code. You can drive around for several cycles and it may clear on its own, if all is well. But it will take a few trips/few miles.
116912
I can only speak to the experience I've had, with replacing the O2 sensor on a BMW. This sensor is plug and play with that car, nothing else needed aside from an oxygen sensor socket to complete the job.
1693937
Hello, Sir;For the UPSTREAM CNG Engine the oxygen sensor part number 13117For the UPSTREAM GAS Engine the oxygen sensor part number 15716For the DOWNSTREAM GAS Engine the oxygen sensor part number 15717 or 15718.Thanks. Hope this information are helpful. Thanks