vt89gtvert

So i am putting new O2 sensors in the mustang in the next month or so and was debating putting in a a/f guage while I was messing around down there. My car isn't really anything that would require the guage, but they aren't expensive and would be a good diagnostic tool IMHO.

My question is has anyone seen a way to wire it so you can switch between the O2 sensors to get the ratio of the left and right banks? At first a simple switch would seam to work, but I am worried about losing voltage betweeen the multiple connections and additional wire. Does anyone know if this would be an issue, or seen it done?


Thanks,
vt

mjr46

the a/f gauges in all honesty are a waste, a wideband is a better diagnostic tool for monitoring a/f

mattdel

Regular o2 sensors don't provide enough detail to realistically provide info to a gauge.

You'd need to install a 3rd one, they have a specific name to them but i'm having the king of all brainfarts right now.

edit: thanks mike. WIDEBAND. yah. that.

luckythirteen13

a gauge hooked to the stock o2 sensor will tell you nothing. there is no diagnostic info you can get from them.

like others have said, you need a wideband o2 for diagnostic info. itll require you to drill a hole in the exhaust and weld in a bung for the new o2 sensor to thread into. itll also set you back a couple hundred bux.

sn95_331_GT_ yellow

AEM UEGO gauges are nice, i got mine for $190 shipped off ebay...

i just welded it into my X too...

thats how i learned i had 16:1 at WOT for about 2 years (and thats just the 2 years i owned the car...)

vt89gtvert

I was really hoping the $40 guages would provide the info wanted....

Thanks for the education

mattdel

A regular o2 sensor is only designed to tell the PCM whether the mixture is lean or rich. It won't give an accurate, and readable, A:F ratio.

Your $40 gauge will work, but you'll need a wideband sensor in the pipe to make it work.

sn95_331_GT_ yellow

itll do a pretty light show for you...

minnow81469

another reason to go with the wide band is those crappy 40$ gauges you have to splice into the o2 harness and after time it cuts through the wire causing a mf***** of problems trust me not worth it been there