In reply to dean1484:
Yes, I saw your post, but for the same reasons I don't have time to remove the exhaust and relocate the sensor, I also don't have time to figure out everything in that link.
I can figure out anything on a car given enough time. I've been doing this stuff for 45 years. But I'm very busy, so I come here looking for a shortcut answer, hoping that someone might have the information that saves me a lot of time.
Don't get me wrong, I appreciate your effort to help. But I'd rather relocate the sensor than try to figure out if one of those sensors is going to work in this application or not.
This verbiage in particular makes me less than confident that this sensor will work, as there is no mention of using it in automobiles. If I had known I would get accused of ignoring the answer to my question, I would have posted this after I read it, which was right after the link was posted.
"Delphi offers Mini-Switching Oxygen Sensors for gasoline engine programs, such as motorcycles which will require closed-loop sensors to help meet anticipated new exhaust emissions regulations. The sensors can also be used in engine programs for commercial products such as lawn mowers and power generators, and for "power sports" products such as personal ATVs, to enable the use of gasoline-ethanol blended fuels."
dean1484 wrote:
bravenrace wrote:
Why can't somebody just answer the question I asked. That's ALL I need. :)
I did but YOU need to do some homework. :)
Exactly. You didn't provide any answer. You provided a link to information that might lead to an answer. A link I had found before I posted here, and discounted for the reason I posted above.
Sell all you cars as-is and get a Prius. Sounds like that would be the best solution to your o2 sensor problem in your Miata.
In reply to dean1484:
Thanks. You've been a big help.
bravenrace wrote:
This verbiage in particular makes me less than confident that this sensor will work, as there is no mention of using it in automobiles. If I had known I would get accused of ignoring the answer to my question, I would have posted this after I read it, which was right after the link was posted.
"Delphi offers Mini-Switching Oxygen Sensors for gasoline engine programs, such as motorcycles which will require closed-loop sensors to help meet anticipated new exhaust emissions regulations. The sensors can also be used in engine programs for commercial products such as lawn mowers and power generators, and for "power sports" products such as personal ATVs, to enable the use of gasoline-ethanol blended fuels."
I read it as the sensors were actually designed for harsher environments that those used in cars. They look to be a standard 4 wire sensor and I would assume use the standard WB)2 sensor controller. Since it is my understanding that WBo2 sensors are for the most part generic it should work and why would they design something with a completely different control system? Anyway if you are too busy to make a phone call then you obviously have much bigger issues then just this O2 sensor in your life and the moment and you don't need cars adding you your situation. Hence why I can see the Prius as the answer (at least for the moment). It sounds like you need an appliance that is reliable as gravity at the moment till you get other things sorted.
On another note, your link above did not work for me so I did not know that it was one you already looked at. Sorry bout that but I don't have telepathy. BUT now that I have seen those I am actually very interested in them as when retrofitting O2 sensors having it be smaller would be very nice as I would allow for better clocking of the sensor with respect to the pipe.
Best of luck with your problem. It is a very unusual problem that I can not say I have ever hear of when dealing with a stock sensor in a stock component.
Actually, I just noticed a problem with those Min sensors I posted. The thread appears to be a smaller size than the standard sensor so it would not appear that it would work in the standard bung on the car and as such would require either an adapter or a new bung welded in place. So that does not make any sense as you could just have a new bung welded on for the stock sensor. Saving the cost of the new smaller sensor.
Four wire is usually a narrowband, which are a lot more consistent than widebands in terms of output and control strategy. It's what this car should be using.
Keith Tanner wrote:
Four wire is usually a narrowband, which are a lot more consistent than widebands in terms of output and control strategy. It's what this car should be using.
Ya you are correct I mistyped brain is a bit toasted today from lots of report writing.
On another note, I just looked around and found that the guys on the Harly Davidson's are using these mini-sensors and they seem to be saying that the mini ones are exactly the same as the standard ones. There was even a long post from a guy that seems to have 300+ miles of real world driving with one in place.
NordicSaab wrote:
Antifoul with a 90 degree angle
Thanks, man. That worked like a charm. 
bravenrace wrote:
NordicSaab wrote:
Antifoul with a 90 degree angle
Thanks, man. That worked like a charm.
If the sensor is not in the flow of the exhaust does it still work properly?
Keith Tanner wrote:
Four wire is usually a narrowband, which are a lot more consistent than widebands in terms of output and control strategy. It's what this car should be using.
I wouldn't exactly put it that way. It's a simpler, but more limiting control system. Not really more consistent, but more accurate at the switch point. I far prefer WB controls.
But 4 wire = narrow band, and it is what this miata should have...
In reply to bravenrace:
What brand O2 sensor do you have? NTK and Bosch are quite a bit different in terms of the size.
dean1484 wrote:
bravenrace wrote:
NordicSaab wrote:
Antifoul with a 90 degree angle
Thanks, man. That worked like a charm.
If the sensor is not in the flow of the exhaust does it still work properly?
if it is the downstream o2 then most likely it will work. alot of people use the antifouler trick when removing cats on a obd2 car. I did it on my 1.8t audi a4 and it worked fine, never gave me a CEL. But i have seen some people use them and still get a CEL so it can be hit and miss
alfadriver wrote:
Keith Tanner wrote:
Four wire is usually a narrowband, which are a lot more consistent than widebands in terms of output and control strategy. It's what this car should be using.
I wouldn't exactly put it that way. It's a simpler, but more limiting control system. Not really more consistent, but more accurate at the switch point. I far prefer WB controls.
But 4 wire = narrow band, and it is what this miata should have...
More consistent from brand to brand. Sorry, I wasn't clear. All narrowbands are basically interchangeable as long as they have the same number of wires , but widebands are not - either in terms of output (voltage vs lambda) or control electronics.
