$3.38 with both plugs.
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$3.38 with both plugs.
Got the new sensor installed (Thanks Shepherd!) and it does what has been said. A bit of increase to the bottom end and an overall smoothness to the engine.
I have a MAP sensor from 96 integra-OBD 2?? Will that work?? I wired it up but the car ran shitty and through a code. Not sure if i skrewed up or is it just because the MAP is obd2.
check your wirring. it is eather you wired wrong or you can't use it
Ya-I had it wired backwards. It seems to run better at higher Rpm. I got a complete GSR obd2 throttle body for FREE. :)
hey kevin, Nice hatchie u got there. LIke the rims, looks like one of the lug nuts is missing on ur front tire :). and whats up with the big ass pic on your sig bro? didnt u read the rules? :)
thanks-Ya i cant figure out how to resize the stupid picture!!
damn man.. I gotta get me one of these.. time to goto local yard hehehe.. shepard, if I can't seem to find me one, think you might be able to "hook a brotha up" lol
shit this sounds awsome. does it cause any harm to your engine? and will the oxygen sensor add more air to the extra fuel thats being delievered? basically i cut off the 3g sensor off the sensor wire, and then cut off the sensor off the 4g sensor wire, and wire them together?
listen to your self. you don't even sound like a person that knows anything about the cars. get yourself a manual and read.Quote:
Originally Posted by AccordAddict
the map sensor changes the fuel curve depending on the vacuum present in intake manifold.
it has nothing to do with oxygen sensor. oxygen sensor measures the volume of CO in exhaust and that tells ECU how rich or lean your car is running. it has nothing to do with adding more air or fuel.
i will presume that ur statement was just a sarcasmQuote:
Originally Posted by AccordAddict
Quote:
Originally Posted by AccordAddict
I was under the impression that the task of the oxygen sensor was to "tell the ECU how rich or lean your car is running" (what the air to fuel ratio is) exactly in order for the ECU to adjust the air to fuel ratio (that is add more or less fuel making the mixture richer or leaner) based on the information supplied by the oxygen sensor, meaning therefore that the oxygen sensor has a whole lot to do with adding more or less fuel (but not air). That is the sole purpose of it being there. But I'm new to this so feel free to point out where I'm mistaken.Quote:
Originally Posted by shepherd79
there were versions of EFI 3 geez without oxygen sensors. i know paul in moscow had aerodeck without oxygen sensor.
oxygen sensor does tell ECU what the condition of the mixture. in reality, stock ECU has it is fuel map set. so oxygen sensor won't change it. if you run air/fuel gauge on stock EFI 3g you will see that it is running rich on the top.
actually every EFi car setup to run rich on the top. that is why Apexi SAFC or HKS super AFR can control how much fuel can be sent. with Apexi or HKS you can modify fuel curve to achive perfect air fuel ration through out the power band.
I didn't say that the oxygen sensor will change the map. I don't fully understand what the map/sensor is or it's purpose. I'm trying to dispute your statement that "it (oxygen sensor) has nothing to do with adding more air or fuel."Quote:
Originally Posted by shepherd79
While I agree it has absolutely nothing to do with adding air (it's a NA engine to begin with) which is where AccordAddict's statement was off, I'm arguing and it is my understanding that the oxygen sensor indeed has a lot to do with adding fuel since the ECU fine tunes the mixture based on the data it receives from the oxygen sensor.
What's the point of there being an oxygen sensor and it sending info to the ECU if the ECU doesn't use that info to adjust the mixture accordingly at least to the degree where the oxygen sensor input is only used for fine tuning it? What else is it there for? What is it's purpose if not that? Why did my fuel consumption improve then when I replaced the bad oxygen sensor?
Are you saying the ECU pretty much goes by the map alone and the oxygen sensor is there only as a feed back to prevent/correct too lean of a mixture or something if that happens for some reason and the fuel consumption improvement once the oxygen sensor is replaced is there only because the ECU works in a non optimal safe mode of a sort if the oxygen sensor is non functional? I'm just trying to figure this out.
Oxygen sensors are not needed to run an Internal Combustion Engine.
The only reason you need them, is to run the engine at its optimal efficieny and to abide with certain emission parameters.
Oxygen sensors generate voltage depending on how much oxygen is present in the exhaust gas and the ECU uses this voltage to match it up with its built in map and supplies the fuel as such. and this is regulated by the injectors of how much fuel is needed.
Engines run richer at the higher engine speed (rpm) is because thats when u get more air in and to compensate for it, u need to add more fuel. (Stock engines are designed to run rich on the top end, but with AFCs and aftermarket goodies, this can be modified).
Your car performs better with a new oxygen sensor compared to the old shitty one is because the new one puts out the right voltage under any engine load and is easily matched by the ECU to add/reduce fuel. But the old shitty one, puts out crazy voltage and hence misguides the ECU there by leading to a shitty running engine(car).
yes, if one of the feedback sensors that is required for optimal/normal functioning of an engine goes bad, the ECU will revert back to its safe/limp mode to get the car moving. It will not be efficient or desirable, but it will get you to the nearest shop than leaving you completely standard. This is done basically by using the engine's speed (RPM) and the ECU uses its preloaded map of the "assumed air/fuel ratio" leading to a poor operating car. This is often done in conjunction with ignition retardation.
well in that case, do you know where the oxygen sensor is i wanna replace mine with a new one so my car doesnt run shitty anymore.
its right on the exhaust manifold. since ur a 86 efi, u only have one.Quote:
Originally Posted by AccordAddict
AccordAddict, When I researched it I red about some racer using the same oxygen sensor for 18 years or something like that and cleaning it with lemon juice (citric acid). My memory is not clear on this and I didn't bookmark it.
If you do decide to change it and want to save some $ get a universal bosch one for $16-19, not the one made for our car particularly $35-40. The only difference is that the universal one comes with only a wire while the replacement one has proper length wire and the right plastic connector. I didn't mind connecting 2 wires for $20+.
AutoZone will rent you the oxygen sensor socket set for free.
wow cleaning with lemon juice. thats a new one. I have read and been told that we cannot and should not clean the O2 sensors and they are real sensitive to cleaning or spray agents. Strange that lemon juice does not affect it. can we use lime juice instead? :)
hmm i was thinking the other day about this. Does anyone know if this would work? Since i have a b20a in my accord and most of the stuff from the prelude is similar i wonder if i were to get a map sensor from a 88-91 prelude it would work good with the b20a? Does the 88-91 preludes have the map sensor on the throttle body? Or does it have it in a gay ass vaccum box?
I wonder if this would give me a good gain with the b20a and i also have no idea if it would connect up as easy as the 4th gen accord one does?
Not the post I mentioned, but here are some quotes:Quote:
Originally Posted by smufguy
Ive read that citric acid is quite safe to clean O2 sensors.
I think that you will have to clean the O2 sensor about every oil change to keep it working properly. You can do this apparently with simple lemon juice and salt mixed together ( same thing works great at getting stains off enamel baths).
so I recently put the map sensor on my prelude and what a difference it made wow lots of torque beyond 4 grand, and would it be ok to put the sensor on a 2nd gen integra? kill the gas mileage?
Quote:
Originally Posted by rustlude87
gas mileage will go down just a tiny bit, but youll feel a difference in power, youll see more of a difference if you have other mods like i/h/e.
