Flex718
Newbie
I've got a 72 k5 with a 350 and 3sp and I have an air fuel ratio gauge from a previous build but was wondering how to hook it up to the blazer since it is carb'd and has no computer at all. All help would be appreciated.
CK5
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Adding air fuel ratio
- Thread starter Flex718
- Start date
a narrowband o2 sensor is pretty worthless imo.
You need to get an 02 sensor to hook it to.
So you need either stock manifolds with the o2 provision, or weld one in.
Better off with a wideband sensor, but you would still need a place to attach the o2
You need to get an 02 sensor to hook it to.
So you need either stock manifolds with the o2 provision, or weld one in.
Better off with a wideband sensor, but you would still need a place to attach the o2
If its the one that reads the oxygen sensor, the best way is to mount it in the dash, glue the needle where you want it and make it look pretty since it has nothing to read.
Otherwise, you will have to drill the exhaust pipe, weld in a nut, and install an oxygen sensor.
I suppose it might help to check the jetting on the carb, or how well its tuned, but I don't know if it would be worth the effort.
Otherwise, you will have to drill the exhaust pipe, weld in a nut, and install an oxygen sensor.
I suppose it might help to check the jetting on the carb, or how well its tuned, but I don't know if it would be worth the effort.
they are ok
I picked up mine from Orielly's. $60 for an autometer, plus $5 for the little mount I got for it. The Denso O2 sensor I got works fine and I already had a place in my headers for it. It reads everything a little richer than it is I believe. My plugs shows lean (which the gauge shows for cruising and part throttle, but good for everywhere else). It's a tool I can use to help, since I'm retarded in this area anyway. Once the carb is set for my three main places I drive, I'll prolly end up removing the gauge.
Power wire = ignition hot
Ground = ENGINE ground, as close to the O2 sensor as possible for best performance
Signal = Of course the O2 sensor
I picked up mine from Orielly's. $60 for an autometer, plus $5 for the little mount I got for it. The Denso O2 sensor I got works fine and I already had a place in my headers for it. It reads everything a little richer than it is I believe. My plugs shows lean (which the gauge shows for cruising and part throttle, but good for everywhere else). It's a tool I can use to help, since I'm retarded in this area anyway. Once the carb is set for my three main places I drive, I'll prolly end up removing the gauge.
Power wire = ignition hot
Ground = ENGINE ground, as close to the O2 sensor as possible for best performance
Signal = Of course the O2 sensor
Stomis
Professional Amateur
As said theyre basically useless w/o a wideband. Also theyre a good tool to use for tuning a carb rather than pulling the plugs to dial in the fueling. Not to mention for guys that race its a huge warning light to take the foot off the gas if you lean out up top.
I plan on putting one in my carbd cutlass just as a warning if something is wrong.
I plan on putting one in my carbd cutlass just as a warning if something is wrong.
Flex718
Newbie
Well im redoing the whole exhaust at the moment from the headers back, thats why i asked because ill be under there anyway. I just didnt know the price on a wideband o2 sensor or how exactly it would be wired up
I had an aem uego in my car.
http://www.amazon.com/AEM-30-4100-UEGO-Controller-Gauge/dp/B000CFQM4G
worked great. They can be had fairly cheap compared to other units. Still around 200 bucks.
http://www.amazon.com/AEM-30-4100-UEGO-Controller-Gauge/dp/B000CFQM4G
worked great. They can be had fairly cheap compared to other units. Still around 200 bucks.
