air fuel ratio gauge

[longjeeper]

ok so i have an 05 gt and when i was installing my auto meter gauge i had trouble locating the signal wire. i pulled the wrap off of the oxygen sensor and there are 5 wires from the sensor and 6 wires on the ecu sides, i need help and cant seem to find the right wire, also i tried the green wire like the diy says and the gauge doesnt read

[thewilson]

I too want to install an A/F Gauge but I had a friend tell me I should get a wideband o2 sensor for my application.... So either way what freakin wire does this toaster(longjeeper) :D need to connect too?

Must I light inscents and leave an offering on the Elantra god alter?

[KeWLKaT]

it should be the light pink one on the narrowband sensors.

Sometimes.

On wideband ones (04+ are wideband) I have no clue, be my guest to pioneer since I don't have your car.

Though keep in mind that wideband sensors have both wide and narrow outputs.

[longjeeper]

ok so i think i got the right one, i spliced into the yellow wire with a red stripe and the gauge reads rich when i first start my car then it goes to the stoichiometric range but the highest rich led still flashes along with the stoichiometric led so is this right or did i do something wrong?

[txdproject]

it should be sweeping...when the car is idle. I have a narrow band a/f in my car and when key is in the ign it 1 led is on saying i have a perfect mix(of course i couldnt have a perfect mix if the car isnt on lol) anyway once you turn on the car it should stay that way for about 5-10 secs then start to sweep as the o2 sends it a signal if you tapped the correct wire

[2loud2k2xd]

^^
yup. and you could search for a/f ratio gauge diy, and came up with this--
http://www.elantraxd.com/forums/showthread.php?t=11387&highlight=a%2Ff+ratio+gauge+diy

then you too can watch the led's go fcking nuts while you drive. back and fourth all the time. :) it drove me crazy in the begining, but i just ignored it.

[KeWLKaT]

NO NO NO NO NO

YOU GUYS HAVE IT WRONG

It should NOT be sweeping.

LONGJEEPER has an XD2, which come STOCK with WIDEBAND sensors ase the primary one. As far as I know you are the first one with a setup such as this one I've heard of on EXD as everyone else has put a gauge on their narrowband sensors on PRE-04 cars.

THERFORE you are pioneering my friend, what it is doing sounds right but I cannot confirm, since, like I said, I have a XD (01-03) and we have narrowbands only.

[txdproject]

NO NO NO NO NO

YOU GUYS HAVE IT WRONG

It should NOT be sweeping.

LONGJEEPER has an XD2, which come STOCK with WIDEBAND sensors ase the primary one. As far as I know you are the first one with a setup such as this one I've heard of on EXD as everyone else has put a gauge on their narrowband sensors on PRE-04 cars.

THERFORE you are pioneering my friend, what it is doing sounds right but I cannot confirm, since, like I said, I have a XD (01-03) and we have narrowbands only.


whoops thanks for the correction kewlkat... in that case since it uses a wideband sensor wouldnt you need to use a wideband gauge or some sort of convert to narrowband gauge

[Cypher]

^ you really shouldn't talk if you don't know what you're talking about

[BColeman]

I have an 05. I put a SunPro on in the beginning, following the DIY, and got a reading from the green wire on the 1st O2 sensor. However, it stayed at Red, all the way rich.

Since I've learned that the 1st O2 Sensor is a WIDEBAND, I've opted to run the gauge to the 2nd O2 Sensor (now using a FAZE gauge), which is a NARROWBAND O2 sensor.

The other option you have is going straight to the ECU, which is what I'll be re-doing this coming weekend. The pin-outs are different between the 01-03 and the 04+, so give me a few minutes to find the pin outs and I'll post them up here shortly.

[txdproject]

^ you really shouldn't talk if you don't know what you're talking about

You can get a product that does Narrowband to Wideband Gauge Converter so maybe i do know what im talking about... in any case i was trying to through some input in. If they make a product that does narrowband to wideband then something should be out there to do it the other way ;)

[BColeman]

^ It's all about voltage readings, that's why they can't be converted the other way around. Any A/F gauge on the market now is only a narrow band, more for show than for accuracy.

Blitz, GReddy, and Apex-i have Wideband gauges for you to connect to a Wideband O2 sensor, whether it's a factory one or an after market Bosch replacement one. They are about $250 to $300. Or you have the option of buying the gauge with Wideband O2 sensor package, like AEM ($275), Innovative Motorsport LM-1, and many others.

If you are forced induced (including nitrous), there is really no reason to have a wideband, unless you are tuning all motor, and even then you aren't really doing much. You also have to remember that an A/F guage is really only accurate at WOT because that's when the ECU no longer using the 02 sensors for tuning, but the flow of air (MAF or MAP) and other things to compute fuel and timing. When not in WOT, the ECU is using the O2 sensors for determing fuel and timing, so the gauge will display various readings.

[KeWLKaT]

Actually apparently, from what FordFasteRR said the other day it seems that the ECU still uses the O2's at WOT.

[Cypher]

yes, what happens is when you hit WOT the car gets thrown into closed loop which is where it disregard most of its sensor input and uses the o2 to determine how "Well" its doing with its air fuel mixture. i think thats how it works but then again i have some drinks in me

[longjeeper]

ok so here is a video of my sensor in action from start up until it reads in the stoichiometric range can someone confirm that it is workig right thanks also when i ran the sensor wire i ran it with my amp power wire would this cause the gauge to read wrong or anything like that thanks again

first one just start up
http://s145.photobucket.com/albums/r215/longjeeper/?action=view&current=MOV00380.flv

second one running and rev
http://s145.photobucket.com/albums/r215/longjeeper/?action=view&current=MOV00378.flv

[KeWLKaT]

nope.
you have a narrowband gauge hooked up on a wideband sensor.

it is just in the process of ****ing up your gauge it seems.

[longjeeper]

ok so i will hook it up to my second sensor which is the narrowband would that then make the gauge work properly?

[BColeman]

Yes, the gauge will then function properly. BUT, you still won't have accurate readings to tune from because you really want to be closer to the exit of the exhaust gases.

[KeWLKaT]

...and because it will be after the second cat...

[jrod13]

light show ftmfw!!!

[longjeeper]

ok thanks, but the purpose of this gauge isnt to tune, its so that i can monitor my air fuel ratio, so that i can trully know how my car is reacting when i hit nitrous and for when i do a turbo kit, and just wondering what wire i tap into for the second sensor, and thanks

[KeWLKaT]

there are 4 wires, from which 2 are ground. It's one or the other that aren't ground :)

If I remember. LOL.

But anyhow I had tapped into the ECU side of the harness myself so I wouldn't be abel to tell you which wire it is.

[longjeeper]

ok i guess i will just have to crawl under there and see which are which, thanks though

[mayollo072R]

there are 4 wires, from which 2 are ground. It's one or the other that aren't ground :)

If I remember. LOL.

But anyhow I had tapped into the ECU side of the harness myself so I wouldn't be abel to tell you which wire it is.

Im installing mine and I need to know which pin in the ecu is the signal one. HEEEELP Felix!

After a search I found a DIY...

[KeWLKaT]

#43 I believe.