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Old 08-20-2007, 04:16 PM
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autometer air/fuel gauge

Hello
I just purchaced a air/fuel guage with out instructions and i'm having trouble
finding any information on how to hook it up. I now the groung wire and the power wire, but there is one left which is green and i'm thinking it goes to the
oxygen sensor on the exhaust,but i am not positive. please help

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Old 08-20-2007, 05:35 PM
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rodcook,
just about every mfgr of anything has full instructions posted on their website....

like autometer:

http://www.autometer.com/tech_instructions.aspx
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Old 08-20-2007, 05:37 PM
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Doc here,


Uhhh..Huh....

First NEVER buy electrical or electronics unpackaged, and/or off the internet..

Most likely, the factory smoke has been removed by the previous hamhanded owner..and he's just trying to get back his fazools...UNLESS you know FOR sure..it' s a Reputable (not reptile) dealer with phone support and instructions with a warranty..

That being said..

NO fuel gauge goes to the OXY sensor..unless you want to TRASH the Engine computer..then yeah..have at it...

The Gauge wires are "I" , "G" , and "S"...

The I wire goes to a 12 volt fused, Switched buss line.

The G wire Goes to a properly Bonded ground Buss.

The S wire goes to a MATCH RESISTANCE value sender, to your GAUGE..you see, you just Can't throw any two senders and a gauge together and make it play accurately, (or at all) they must be resistive compatible..Refer to your instru.....uhhh..well...I guess you didn't get any..Well, option 1 (the best) Toss it, and buy a proper set with packaging and warranty (as well as spec's)

Option 2 : Go to radio shak..buy a handful of 1 watt resistors from 30 ohms to 290 ohms, and a 12 volt lantern battery..(About $ 15 to 25 fazools altogether..see where this is going?) hook up power and ground to the gauge from the lantern battery, and using the resistors on the S line , to ground, look to see what value will almost send the index pointer to "F", that value (say, 90 ohms) will be how you base your sender..0 to 90 ohms..order and install one..from about $15 to $300 Fazools...depending on type and car, and where you get it..


Doc
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Old 08-21-2007, 04:35 AM
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Rodcook,

those A/F ratio guages are made to match "most" oem narrow band O2 sensors for calibration....but....O2 sensors don't last forever so it would be wise to order the #2244 O2 sensor kit for accuracy or atleast replace the oem sensor

garbage in (old sensor)=garbage out (reading on the guage)

is it a $$$ autometer or is it a $$ "autoguage" guage

opinion:
a narrow band guage works good for reading too lean cruisin', it falls off the calibration scale at WOT full rich......you need a independent wide band sensor and guage for strip tuning...see article link:
http://autospeed.drive.com.au/cms/A_3032/article.html

Last edited by red65mustang; 08-21-2007 at 05:01 AM.
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Old 08-21-2007, 03:40 PM
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Quote:
Originally Posted by rodcook
Hello
I just purchaced a air/fuel guage with out instructions and i'm having trouble
finding any information on how to hook it up. I now the groung wire and the power wire, but there is one left which is green and i'm thinking it goes to the
oxygen sensor on the exhaust,but i am not positive. please help
Doc here,


OOPS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

MY BAD!!!!!!!!

I totally misread the title as "Fuel Gauge" (standard) Not A/F Gauge..I'm Sorry about that..and apologize about that!!!

BUT:

My statement STILL stands....

NEVER buy Electronics unpackaged, without installation Instructions , a warranty, a support line (With Human interaction..not push 1 for English..2 for a menu..)

If your prone t do that..

I have an address you can send your checks to also...

Doc's Charity..
P.O. Box $$$$,
Lafayette , Ca..

min order $25 Fazools..+ S&H, 7.95, AND we will send you a half opened box of our favorite Hickory Smoked Electronics!! ..

How Can We Afford this , you say...??

We Make them ALL at our Warehouse Location!!

Call now..you will get FREE...Not $9.99, not 6.95, Not EVEN 2.95..But FREE..absolutely FREE...No Instructions..!!

Nobody else can meet or beat that deal!!! But Does Crazy Doc Stop there??? NO!!..

IF you call within the next 10 minutes..We will include our Famous "No warranty Policy" All For the low, low included price of $25 Fazools....Operators (and I use the term ... loosely) Are standing by...


Sorry for the error..

Doc
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Old 08-25-2007, 03:30 PM
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Doc I am glad you made that admission. I was just about to tear you a new arss. It wasn't a fuel gauge.

It takes a big man to admit when he is wrong. Doc fits that bill !

Billy
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Old 08-25-2007, 06:52 PM
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Quote:
Originally Posted by Billvill
Doc I am glad you made that admission. I was just about to tear you a new arss. It wasn't a fuel gauge.

It takes a big man to admit when he is wrong. Doc fits that bill !

Billy

Doc here,

Like the famous "Inverted Bluejay"...I screw up a lot too...

need youse guy's to keep me honest here..sometimes I "Get Behind the curve"...

I answer so many PM's , posts, Emails and get folks walking in here asking for help (which also happens to be a hospital room..) that I have a tendency to "Not read all I see.." or get tired real quick and tend to "Skim"..

When I catch them, I normally try to correct my errors..and if someone else catches them..that only helps me to remember to "Pay more attention" next time..and thank them for doing so..

Thanks!

Doc
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Old 08-25-2007, 07:22 PM
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I was fortunate or lucky. I bought my autometer gauges used from a guy online (knew him for a long time from a forum though) and everything works fine.

I had the installation instructions, but still asked here to be sure on the voltage gauge. The instructions were a little less than understandable to me.

Doc and a couple of others sorted it out where it made sense to me. That is an accomplishment in itself.

Everything works fine!
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