Air/Fuel gauge working properly? [Merged 10-6]

[R-U-QUIKR]

I just bought a Autometer A/F gauge and I was wondering if it is supossed to light up from the lean leds to whereever you are at in the stoich section or if just a small section of leds should be light up(3-4) with none of the lower leds lite at Idle?

 

[Wobble]

at anything but WOT it should strobe back in forth.. and more than let will light... it will look like:

[ |||||... ]

you get the idea

 

[Wobble]

at anything but WOT it should strobe back in forth.. and more than let will light... it will look like:

[ ||||| ]

you get the idea

 

[R-U-QUIKR]

what I'm trying to ask is should the lean LEDS be lite if the gauge is lite midway up the stoich section or should just the LEDS in the stoich section be lite.

 

[Wobble]

from left to right (lean to ritch) they will all be lit.. and you read from the farthest right (ritch) light.. so yes.. if your reading ritch.. all the lights to the left will be lit, not just 1 led.. its normal.

 

[R-U-QUIKR]

Thanks for the help guys.

 

[chaye]

hey guys whats up
ok i installed the A/F gauge and i works when i start the car but once it warms up the leds dont swing back and forth and it only works when the wastegate opens. I already installed an new O2 sensor(the one on the housing)
my question is that is it not swinging back and forth because the o2 sensor is in the o2 housing....making it only read what the wastegate spills out?
or should i hook it to ther rear sensor??
thanks guys

 

[LightningGSX]

What do you mean it "works" when the wastegate opens?Do NOT connect it to the post cat sensor.

 

[chaye]

well i hooked it up to the front o2 sensor like it says on the one of the links here.
i hooked the power, ground to the ecu like it said on one of the links in here.
but it doesnt swing back and forth it doesnt light up when the car is runing and at WOT it doesnt read shit, but when i let off the gas after shifts it lights on the green and goes to red and then shuts off
i have no clue as to why its not working..
do you have it wired diff then i did

 

[LightningGSX]

Well it should only swing when the ecu is in closed loop mode which isn't all the time(different in every vehicle).Don't get offended but you hooked it to the 02 signal wire and a known power and a known ground right?Not just what someone else said?When you say it shuts off, you mean there is no readout?

 

[Woody91GSX]

The A/F gauge is only accurate at WOT. I'd check the mixture screw in the bottom of the MAS. You may have a LEAN condition ALL the time - which is bad. If you have a GM MAS, then you can adjust it. You may have everything hooked up right, you just may have a LEAN condition.

 

[chaye]

yes when i say it shuts off i mean i dont get a read out anytime not even at WOT the only reading i get is from when i let go off the gas after boost then i only get a reading that starts at the mid rich position and swings all the way to lean then it shuts off and no more readings.

thanks guys i apreciate your help guys thanks

 

[Coup D E'Tat]

My gauge is all fudged up. It just sits at lean, on the last LED, and dissapears rather often, and then comes back, just on that one LED.

It worked until I had O2 problems a while back, but I found out that both grounding cables were off. Once reconnected, I didn't have any CEL, and my gas mileage is fine, so I didn't change the O2 sensor(s.)

When the above was happening, it was just sitting on full rich all of the time. This, I found out was caused by the wire coming off, and not being connected to the O2 sensor wire any more. I accidentally reconnected it to the wrong wire. Could this have possibly messed it up?

Does anyone know why it would be all messed up, or how to test it, or something?

 

[blackvr4]

use a data logger

 

[Coup D E'Tat]

For what?

 

[Andy5]

Find a different source to tap.. A/F guages aren't worth the money anyways, sell it pick up a Logger and find out exactly what your a/f ratio is.

 

[Coup D E'Tat]

I suppose I'll give that a shot, if I ever get around to it.

 

[packinkimber45]

Installed my autometer af guage, and all I get is first lean led. after warming up engine same. I know I installed it right. this is the second time I have done this. light does not move up and down. stays on the same led. when I blip the throttle, light just get stronger, but not responding... any ideas. thanks.

also... figured instead of doing another thread I would just use this one. can anyone direct me where I can get some prices on data logging hardware I need. already have a palm m100. I just need the cable and software. unless I can get a package deal that is better than the palm I already I have for cheap. I found one on ebay, but not sure if I was looking at the right stuff. thanks.

 

[GVR4592]

You might have a dead O2 sensor. Honestly I wouldn't worry about it too much, an A/F gauge is worthless and will just give you an interesting blinky light show.

 

[yekrahs]

like he said...I've never seen an a/f guage that worked...I wouldn't worry too much about it

 

[packinkimber45]

thanks guys, too bad this is a brand new guage. dont really want a new gauge sitting around not to mention opened. I probably wont get my money out of it.

how about the logger? where can I find that stuff, what do I need to know... as far as getting the right stuff. thanks.

 

[packinkimber45]

anyone.....


if my o2 was bad would this be the result? how about that logger info? thanks again.

 

[streetlegends]

anyone.....


if my o2 was bad would this be the result? how about that logger info? thanks again.

Yes!!! Think about it.. it's a sensor inorder for you to have a reading you have to get a readout from the sesnor. Mine works fine and I just have it for show. Replace the sesnor and see what happens. If you got it for tuning then you will need the wideband which is around 200 bucks or soo. Don't listen to others about it being unless it's ALL about how YOU feel about it!!!!

 

[95FlamingTalon]

if my o2 was bad would this be the result?

A dead o2 sensor can definately result in the a/f gauge reading lean. The dead sensor will put out low voltage and therefore a 'lean' signal to the gauge and ecu. The ecu will richen up the mixture, making it too rich. Chances are your car is actually running rich at idle and cruise. I experienced this with my car and replacing the o2 sensor fixed it. There could be other reasons for this, but that's most likely your problem.
I agree with these gauges being useful if you know when to trust them. They are good for keeping an eye on fuel trims when a logger isn't hooked up in the car, but they are useless for wide open throttle tuning.

 

[packinkimber45]

thanks guys. will an o2 sensor work out of my 91 gsx? I know that one works because I had the gauge on that car. not sure what year the motor is in my talon where the new gauge is, might be 91-94 motor. 6 bolt for sure, and jdm I believe.

how about the logger? where can I find that stuff, what do I need to know... as far as getting the right stuff. can I get this at a local store such as a radio shack. need to to know info on what kind of cable.... the actual name of the cable and such... do they come with the programs? do I need to buy that as well, or is it a freeware? already have a palm m100. I just need the cable and software. unless I can get a package deal that is better than the palm I already I have for cheap. thanks in advance again.