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#1 |
Registered Member
Join Date: May 1999
Location: sloatsburg
Posts: 261
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![]() i want to hook a volt gauge up to my o2 sensors so i can tell if im running lean or rich i herd its a very good way to check it so if you know tell me how cuase since i converted to carbed there just hanging there not hooked up and where do i hook everything up and what does the guage readings mean like where do i want it to read and can i use this with carbed
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306 edelbrock 6037 heads full mac exuast 1.7 rr 373 rear hd clutch tremec mighty demon 650 carb msd ignition rpm air gap intake custom cam still trying to get it to run right |
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#2 |
Guest
Posts: n/a
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![]() I don't think you'll be able to get a reading of any kind off of O2s that are not plugged into the cars computer. With a carb...I'd ditch them and buy a air/fuel ratio meter.
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#3 |
Registered Member
Join Date: Oct 1998
Location: Rogers, MN
Posts: 2,089
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![]() You can only really use a wideband O2 sensor to do what you're wanting to do. Take it to a dyno facility with the proper equipment and tune it there. We have narrow band O2 sensors which can only sense A/F ratio reliably around the stoichiometric A/F ratio. Readings beyond that wouldn't tell you anything. The computer only guesses on the A/F ratio delivered at WOT based on feedback collected during closed loop mode and readings from the MAF, ECT, ACT, and BAP sensors. Since you've gone with a carb, you just have to keep tuning it yourself until you get it right.
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351W 89 Mustang GT Convertible |
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#4 |
Mustangs
Join Date: Jul 2000
Posts: 1,938
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![]() You could probably splice into the oxygen sensor and get a reading but you'd have to get a voltmeter that reads 0 to 5 volts, which is basically what "air/fuel" ratio gauges are.
I believe that the more oxygen there is in the exhaust the higher the voltage the oxygen sensor generates and vise versa.
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2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem ![]() 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 ![]() 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock) |
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#5 |
Sober voice of Reason
Join Date: Nov 1998
Location: Kelowna, B.C., Canada
Posts: 1,514
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![]() Check out this site, all you need is a 1 wire chev sensor and a digital voltmeter! http://www.bob2000.com/carb.htm You can do it with the stock sensor by hooking one of the wires up to a power source, one to the voltmeter and ground the other (don't ask me which one's which though)
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393W: AFR 205's, hydraulic roller, TKO600. Last edited by red82gt; 10-24-2002 at 11:41 PM.. |
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