A/F gauge questions

hgallegos915 · Post by **hgallegos915** » April 19th, 2006, 12:25 am

Im not bossted or even modded alot but I would want an a/f gauge to be able to tell if engine is running rich or lean. I think its running lean because it lags at high rpms, also well its a nice tool to have. I saw the ones on ebay, but well how much do they usually run for? I looked for an adjustable fprmbut well i dont need it. I just ned gauge and maybe a fuel psi reading. Mosty important a/f gauge/

precidian · Post by **precidian** » April 19th, 2006, 12:31 am

Autometer has decent A/F gauges.. I personally have the cobalt series gauge...

babyblueMX3 · Post by **babyblueMX3** » April 19th, 2006, 10:40 am

they usually run for around 30$
I used to have a autometer ultral lite series

JYOUNYA1 · Post by **JYOUNYA1** » April 19th, 2006, 12:06 pm

precidian, how do you have your A/F gauge wired...Mine is not working at all?

babyblueMX3 · Post by **babyblueMX3** » April 19th, 2006, 12:16 pm

I had mine hooked up like this :

12v from cig lighter light
ground on the chassis
and signal from the stock 02 sensor tapped at the ecu

jschrauwen · Post by **jschrauwen** » April 19th, 2006, 12:41 pm

Of course the readings achieved from a (NB) narrowband input will not be as accute as they would be if a (WB) wideband O2 / lambda was used. There are a number of WB sources out there that have gauges associated with them. Very acccurate readings are achieved from these units. Of course there's an extra cost too. Try a search under O2 for a start for info in that direction..

precidian · Post by **precidian** » April 19th, 2006, 1:15 pm

12v from a swtiched source.. Also have the backlight come on when the lights are turned on.
ground on chassis
wire soldered to connector by ecu

I am swtiching my gauges to nexus series... and they do not have an A/F meter in that series... I have found a wideband A/F meter that I want to get. Cost is $500 US for the kit..

hgallegos915 · Post by **hgallegos915** » April 19th, 2006, 10:34 pm

so its better if i tap from the ecu right? because well if i tap front senosr it will tell me if mjy front cylinders are rich? whnaty about rear? I think rear is running a bit richer..can that even be possible?

FIMotorMX-3 · Post by **FIMotorMX-3** » April 20th, 2006, 8:59 pm

Depending on where you are mounting your gauges, there is a fairly convenient power source right behind you gauge cluster. Remove your gauge cluster and look on the back, there are little screws that are located on the board that are labeled (-) and (+). You can use those for your power and ground. As for the sending wire, I just tapped into the blue wire on my rear o2 sensor, although you may get a more accurate reading from the ecu. I also have my shift light wired to the back of the gauge cluster using the wiring off my stock tach. I'm only using a summitracing a/f and oil press. and a nordskog water temp. I will possibly change them out to get autometer or defi. Not too sure how accurate the summits are.