Air/Fuel Ratio Guage - MustangForums.com


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Old 04-09-2008, 06:34 AM   #1  
stang8689
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Default Air/Fuel Ratio Guage

I am looking at an Autometer air/fuel ratio guage #7575. I really have no idea how to hook this up to my 86. I want to make sure i'm not running too lean or rich. Anyone know how to hook one up?
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Old 04-09-2008, 07:10 AM   #2  
94StinkinLincoln
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Default RE: Air/Fuel Ratio Guage

you have to put a bung in the exhaust, like a 02 sensor hole.
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Old 04-09-2008, 07:54 AM   #3  
Joel5.0
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Default RE: Air/Fuel Ratio Guage

Aside the lights effect, that gauge will not provide you with the info you may be looking for. It uses the narrowband O2 signal (which is a "switching" type of signal) and it will not tell you the actual A/F lambda value. If you still want to pursue its use though, check the installations instructions at http://www.autometer.com/productPDF/0837L.pdf

A better and more economic alternative is to use the EEC-IV and check how it's working, run a set of DIY KOEO/KOER/Cylinder Balance Self-Test and check if you have any rich/lean failure codes stored.
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Old 04-09-2008, 09:04 AM   #4  
FoxGT
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Default RE: Air/Fuel Ratio Guage

x2 on the narrowband only being good for the pretty lights. Better to look into a wideband.
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Old 04-09-2008, 01:30 PM   #5  
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Default RE: Air/Fuel Ratio Guage

yeah I wouldnt waste money on narrowband
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Old 04-09-2008, 02:31 PM   #6  
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Default RE: Air/Fuel Ratio Guage

narrowband FTL
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Old 04-09-2008, 05:14 PM   #7  
stang8689
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Default RE: Air/Fuel Ratio Guage

So whats a wide band and where do I get one. The link didn't work
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Old 04-09-2008, 05:28 PM   #8  
stang8689
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Default RE: Air/Fuel Ratio Guage

I was looking some up and they are about $350 does that sound right
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Old 04-09-2008, 05:32 PM   #9  
1992lx5.0
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Default RE: Air/Fuel Ratio Guage

i wired mine in right into the main harness on the passenger side so it reading both o2s, ill get ya the wire color tomorrow
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Old 04-09-2008, 08:22 PM   #10  
stang8689
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Default RE: Air/Fuel Ratio Guage

thanks
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