air/fuel ratio guage

[js593]

easy man i just got doing that to mine, red to 12v, black to ground and the purple one to the o2 sensor witch is the white wire ok man good luck.


heres a pik of mine i got the same one

Ohh some S7 gauges Nice!

Where did you get this Air/fuel ratio rauge? Id like to get one to see if im running stock or not.

Thanks!

[byc_cb7]

i believe you should be lean on idle. Take it for a run at WOT and see what it tells you.

i ran and it stays around the lean area but i accel and it goes more towards the rich side


off topic: what part of texas r u from

[SamuraiSam]

Are you using a wideband O2 sensor? If not that AutoMeter gauge is only going to look pretty. Your not going to get a proper signal from a narrow band O2.

Quoted for truth.

A narrowband oxygen sensor is only good at very close to, and at, stoichiometric conditions where it will output a 0.5 volt signal. As the car goes slightly rich the signal drastically drops to a low voltage and as it goes lean it drastically increases to a high voltage. The gauge is absolutely and utterly worthless as you can tell this much by reading the plugs (easy and free) or smelling the exhaust. Like an SAFC/VAFC the only place a narrowband oxygen sensor belongs is in the garbage or as a door stop.

If you want to actually know what's going on with your engine pick up a wideband oxygen sensor. These use a controller circuit and a wideband sensor (around $60 for the sensor itself, a controller is around $250-400 depending on what you want.) The output from a controller is configurable, and always linear from 0-5v except in narrowband emulator mode. They are usually accurate down to about 8.5:1 and up to about 22.5:1 on gasoline or around .6 to 1.8 lambda.

I like the Innovate LC-1 or LM-1 (LM-1 is for multiple-car use, and LC-1 is a permanent mount in-car solution). Innovate uses a completely different control methodology for the heater circuit and narrowband circuit control using pulsewidth manipulation instead of an analog feedback circuit like almost every other wideband controller on the market from PLX to AEM. It will tell you when a sensor is failing instead of outputting an incorrect afr. They are around $300 or $350 with a gauge, and well worth it if you are tuning a car yourself.

[GhostAccord]

Narrow Band O2 + Cheap AFR gauge = A nice Dash board light show / Dash Christmas Tree and that's about it.

That is the answer to why your AFR gauge is telling you that you are running lean. There aren't too many stock Honda's that are programmed to run lean. That being said, There is one instance when your car will run lean. While engine breaking your fuel system will run your engine with a lean condition. That's because the ECU shuts the injectors off when it senses 0-5% throttle, High MAP and high RPM's. Or so I have been told

[SamuraiSam]

You have been told correctly. A few conditions have to be met, like being above a certain engine speed, being in high enough vacuum, etc. After that, the injectors are shut off to a 0.0% inj duty cycle.

The narrowband oxygen sensor's job is to provide an oscillating near-stoich AFR at no-load and light-load (cruise). It oscillates because that is the limitation of the sensor. Modern cars equipped with wideband oxygen sensors from the factory (incidentally, they use the exact same Bosch LSU4.2 that the majority of consumer-level widebands use) like the Volkswagen 1.8T generally do not oscillate.

[david17]

man i got one 2 and mine stays on lean it never moves at all

[deevergote]

Are you using a wideband O2 sensor? If not that AutoMeter gauge is only going to look pretty. Your not going to get a proper signal from a narrow band O2.

Agreed. Those things do next to nothing without a wideband.

[chessboxer]

I had one for a while, it was pretty much worthless.
If it plugs into the stock o2 sensor, its a narrowband.
Also, as someone said earlier, pin d14 can be run to the gauge, as it would allow the gauge to read properly.

[quickangel93]

i wired up mines pretty easy

i have a harness comming from my o2 sensor to my gauge. and a harness comming out from my gauge. i wired up red and 12v to a switch and black to ground.

now i see you have a different setup.

red - positive. id hook it up to a switch
black - negative
signal - green wire on o2

[SamuraiSam]

man i got one 2 and mine stays on lean it never moves at all

That is because it is an absolutely useless cluster of random LEDs on your dashboard/A-pillar that tells you nothing about what your engine is doing

[jas_r34]

I had one for a while, it was pretty much worthless.
If it plugs into the stock o2 sensor, its a narrowband.
Also, as someone said earlier, pin d14 can be run to the gauge, as it would allow the gauge to read properly.

would the reading still be the same from the ECU if you were to directly hook it up to the 02 sensor?
i was about to order a set of gauges this week ( including a narrowband a/f) but now im thinking of investing in a wideband...even though they are really pricey

[rexload]

How about JAW wideband, anybody using one?

They are cheap

[93smokingaccord]

they loooks kool at night and the bitches like it lol

[Shadow1]

i hooked my a/f ratio gauge up and its seems to read right. i spliced the wire on the O2 sensor and hook it directly to the gauge. the ratio moves up and down just like its supposed to under normal driving

[93smokingaccord]

mine moves up and down and it goes to rich wen i gas it. holla