Gauges Installed And Working

[SilvrSRT10]

I got all the gauges installed and finally got the A/F ratio working too. I've been going round and round with the A/F gauge. It operates on 0 to 1 volt. The stock o2 sensor puts out 0 to 5 volts (near as I can figure). I didn't want to buy or install the Autometer sensor so I figured a Voltage Divider. http://ourworld.compuserve.com/homepages/Bill_Bowden/r2.htm
I went to Radio Shack and bought the resistors I needed. Wired them together and voilà. A working A/F gauge. I also got the Raptor installed and working. Thanks Dave T (BADVENM) for the deal on the A/F Gauge.

 

[CarolinaSRT10]

Big Dave,

That looks cool.:rock:

You're ready to fly IFR now.:dancing:

Lee

 

[SilvrSRT10]

Big Dave,

That looks cool.:rock:

You're ready to fly IFR now.:dancing:

Lee

Thanks Lee. I've been flying IFR for awhile now. Hardly ever watch where I'm going.

 

[AWDisuzu]

narrowband O2 sensors are 0-1 volt, and wideband O2 sensors are 0-5 volt. The stock sensor is 0-1volt.

i would absolutely NOT trust any wired up device you have constructed! be careful as the a/f ratio is critical and if it's just a tiny bit off you will go BOOM! These widebands are NOT EXPENSIVE! but our motors are.

Please buy a wideband gauge and O2 sensor, as the narrowband one that comes stodk is ONLY used to maintain a 14.7:1 a/f ratio while cruising. 14.7:1 is the only a/f ratio is is capable of displaying, as a milivolt in either direction will throw you into rickh or lean.

~mike~

I got all the gauges installed and finally got the A/F ratio working too. I've been going round and round with the A/F gauge. It operates on 0 to 1 volt. The stock o2 sensor puts out 0 to 5 volts (near as I can figure). I didn't want to buy or install the Autometer sensor so I figured a Voltage Divider. http://ourworld.compuserve.com/homepages/Bill_Bowden/r2.htm
I went to Radio Shack and bought the resistors I needed. Wired them together and voilà. A working A/F gauge. I also got the Raptor installed and working. Thanks Dave T (BADVENM) for the deal on the A/F Gauge.
View attachment 12339

 

[AWDisuzu]

check out these gauges, they are the ONLY ones I recommend based on years of tuning and blown motors.

http://www.plxdevices.com/products/dm5/afr/

~mike~

 

[JTS VENOM PERFORMANCE]

narrowband O2 sensors are 0-1 volt, and wideband O2 sensors are 0-5 volt. The stock sensor is 0-1volt.

i would absolutely NOT trust any wired up device you have constructed! be careful as the a/f ratio is critical and if it's just a tiny bit off you will go BOOM! These widebands are NOT EXPENSIVE! but our motors are.

Please buy a wideband gauge and O2 sensor, as the narrowband one that comes stodk is ONLY used to maintain a 14.7:1 a/f ratio while cruising. 14.7:1 is the only a/f ratio is is capable of displaying, as a milivolt in either direction will throw you into rickh or lean.

~mike~

he did it jsut for looks mike, his truck is basically stock

 

[JTS VENOM PERFORMANCE]

I got all the gauges installed and finally got the A/F ratio working too. I've been going round and round with the A/F gauge. It operates on 0 to 1 volt. The stock o2 sensor puts out 0 to 5 volts (near as I can figure). I didn't want to buy or install the Autometer sensor so I figured a Voltage Divider. http://ourworld.compuserve.com/homepages/Bill_Bowden/r2.htm
I went to Radio Shack and bought the resistors I needed. Wired them together and voilà. A working A/F gauge. I also got the Raptor installed and working. Thanks Dave T (BADVENM) for the deal on the A/F Gauge.
View attachment 12339

Killer Job there cowboy!!:rock: :rock: :rock: :rock: :rock:

 

[AWDisuzu]

you have got to be kidding.

adding gauges that don't work, just for looks, is something the honduh crowd does!

well at least it's not going to blow up. and it looks good!

he did it jsut for looks mike, his truck is basically stock

 

[Dave T(BADVENM)]

Good to hear Silvr, I was worried I sold you something (that was sold to me) that wasnt gonna work. I would have taken care of ya if it didnt work. I'll have an AEM a/f guage installed next week from Justin.

 

[SilvrSRT10]

you have got to be kidding.

adding gauges that don't work, just for looks, is something the honduh crowd does!

well at least it's not going to blow up. and it looks good!

The A/F gauge is a placeholder for something down the road (way down the road). Either Nitrous or a boost gauge.

When I first installed the A/F gauge, all it would show me is full rich. I measured the voltage on the wire and it was 3.45 (approx the right setting for a wideband o2 sensor). This is the Blue/Lime Green wire coming from the passenger o2 sensor. Is it possible I got the wrong wire? If so, clue me in. I don't like installing something that's not functional either (ala Honduh). That's why I wanted to make this gauge act right. True, it's not all that important since I am stock but I like the SRT logo. :rock: That's why I put this in Visual Mods.

I'm beginning to think I've tied into the wrong wire. I've gotta look further to see if there's another blue/light green wire.

 

[DRamSrt10]

These look awesome! Way to go bro! :rock

 

[Django]

I got all the gauges installed and finally got the A/F ratio working too. I've been going round and round with the A/F gauge. It operates on 0 to 1 volt. The stock o2 sensor puts out 0 to 5 volts (near as I can figure). I didn't want to buy or install the Autometer sensor so I figured a Voltage Divider. http://ourworld.compuserve.com/homepages/Bill_Bowden/r2.htm
I went to Radio Shack and bought the resistors I needed. Wired them together and voilà. A working A/F gauge. I also got the Raptor installed and working. Thanks Dave T (BADVENM) for the deal on the A/F Gauge.
View attachment 12339

Those really are nice.........:rock:

D

 

[AWDisuzu]

It really doesn't matter if you got the right wire or not. The narrowband will always read rich unless you are at light freeway cruise, when instead it will bounce rapidly back and forth between rich and lean. (this is called stoich)

any reading above 14.7:1 is rich, and any reading below 14.7:1 is lean. the narrowband sensor output is not linear like a wideband, so you cannot display anything on the gauge besides lean, or rich. there is no in-between. if you know what a "lambda curve" is, you can see how a narrowband actually responds to the mixture.

here you can see that at 0v, you're at 14.5:1 a/f and at 1v you're at 14.8:1 a/f. those narrowband gauges are programmed to guess the a/f ratio based on the number of pulses on the rich side vs # of pulses on the lean side it gets. usually when driving you will just see it pegged rich, and when you let off the gas it will peg to lean. when you are cruising it should be bouncing back and forth like crazy. (idling as well)

here is the output of a wideband controller. Note, the sensor itself is DIGITAL, and you need a digital to analog controller to display the actual a/f ratio.

I hope I didn't explain that too terribly!

by the way, I was wondering where to get one of those gauge pods. I'm installing NOS and a wideband next week and would love one of those!

thanks guys!
~mike~

The A/F gauge is a placeholder for something down the road (way down the road). Either Nitrous or a boost gauge.

When I first installed the A/F gauge, all it would show me is full rich. I measured the voltage on the wire and it was 3.45 (approx the right setting for a wideband o2 sensor). This is the Blue/Lime Green wire coming from the passenger o2 sensor. Is it possible I got the wrong wire? If so, clue me in. I don't like installing something that's not functional either (ala Honduh). That's why I wanted to make this gauge act right. True, it's not all that important since I am stock but I like the SRT logo. :rock: That's why I put this in Visual Mods.

I'm beginning to think I've tied into the wrong wire. I've gotta look further to see if there's another blue/light green wire.

 

[SilvrSRT10]

by the way, I was wondering where to get one of those gauge pods. I'm installing NOS and a wideband next week and would love one of those!

thanks guys!
~mike~

Thanks for the explanation. When I do some serious modding then I'll get some serious gauges. I got the pod on eBay, a place called Speedhut.
http://cgi.ebay.com/ebaymotors/Speedhut-Dodge-Ram-03-04-Tan-Full-Pillar-3-Gauge-Pod_W0QQcmdZViewItemQQcategoryZ43951QQihZ013QQitemZ230112563191QQrdZ1

It's a nice piece and is warranted for life. seems more substantial then the Autometer gauge pod. Perfect color match too.

 

[mmmmtorque]

Awesome Dave :rock:

Now when Iget a shift light and AEM wideband I know who to call over to drinks beers with me during the install

 

[SilvrSRT10]

Awesome Dave :rock:

Now when Iget a shift light and AEM wideband I know who to call over to drinks beers with me during the install

Shift light, no problem. Wideband will be new territory for me but between the two of us, we might be able to figure it out. If not, we can call Stinker.