Air Fuel Ratio Gauge - MustangForums.com



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Old 12-20-2006, 10:07 PM   #1
89 5.0 Mustang
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Default Air Fuel Ratio Gauge

Has anyone ever put an air to fuel ratio gauge in their car? If so i know you need to hook it up to the o2 sensors ,but how do you do it. Do you have to connect it to both o2 sensors?
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Old 12-20-2006, 10:19 PM   #2
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Default RE: Air Fuel Ratio Gauge

Just wire your possitive and negative wires and splice into the black wire on the O2 sensor
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Old 12-20-2006, 10:22 PM   #3
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Default RE: Air Fuel Ratio Gauge

I'm glad you replied cause ive seen your car and the gauges, but so it comes with two wires. Do i put it into both, and im going with the ultra lites and when it is night time how do i wire them to come on when i turn on the lights?
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Old 12-20-2006, 10:24 PM   #4
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Default RE: Air Fuel Ratio Gauge

I have Sport comps and as Far as I know it has 3 wires Red,Black and Purple. The purple is your signal wire.
The gauge doesnt light up the LED's light up to show fuel ratio
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Old 12-20-2006, 10:26 PM   #5
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Default RE: Air Fuel Ratio Gauge

Yea,ok but what about the others, im getting oil press and water temp. (I have no boost so i cant do boost gauge) Those will still light up right.
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Old 12-20-2006, 10:47 PM   #6
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Default RE: Air Fuel Ratio Gauge

Yes
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Old 12-20-2006, 11:05 PM   #7
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Default RE: Air Fuel Ratio Gauge

Cool, and i know i ask tons of questions, and i just apreciat all the help all of have given me. Thanks
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Old 12-21-2006, 04:09 PM   #8
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Default RE: Air Fuel Ratio Gauge

Quote:
ORIGINAL: Black Snake

Just wire your possitive and negative wires and splice into the black wire on the O2 sensor
I'm having the same question. I think I've tapped into the wrong wire. The black wire that you speak of for tapping into, that is on the O2 side of the pigtail, correct?

Oh, my car is an 87 GT.
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Old 12-21-2006, 04:51 PM   #9
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Default RE: Air Fuel Ratio Gauge

no one has bothered to mention that a narrow band o2 gauge is worth absolutly nothing and will not give you any information other then the o2s are working or not. you cant use it for tuning or checking to make sure the car is running correctly because th guage is constantly jumping around. its a glorified light show
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Old 12-21-2006, 05:06 PM   #10
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Default RE: Air Fuel Ratio Gauge

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ORIGINAL: luckythirteen13

no one has bothered to mention that a narrow band o2 gauge is worth absolutly nothing and will not give you any information other then the o2s are working or not. you cant use it for tuning or checking to make sure the car is running correctly because th guage is constantly jumping around. its a glorified light show
I was just about to mention that. Chances are, if you aren't sure how to hook it up, then you didn't know that you will want to get a wideband sensor. It's pricey, but the gauge isnt really worth it without the wideband sensor.

Then again, I don't see a need for the gauge unless there are some major engine mods.
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