Anyone Install O2 Sensor In Closed EGR Port? By jerryscript (Read 812 times)

[jerryscript]

I'm thinking of giving this a try, but I don't know if it's the proper distance from the exhaust port. I believe the operating temperature of non-resistor-heated O2 sensors is 600F. Here's a pic of the closed off EGR port:


I'm thinking of scavenging an O2 sensor and volt meter for a display.

[Bashan]

Does the sensor need to be right in the exhaust gas flow?

[dmartin95]

Yes.

[jerryscript]

Feb 8, 2015 11:23:34 GMT -6 Bashan said:

Does the sensor need to be right in the exhaust gas flow?

I haven't purchased a sensor yet, but AFAIK they all do. I was thinking I could cut off that EGR pipe and weld a bung on there for mounting. Not sure if I can get a proper angle, I've been informed the sensor needs to be pointed down to prevent water buildup on the tip of the sensor.

Plan is to find a cheap sensor and scavenge the display from a cheap volt meter, trying to keep this below $100, kits run $150+.

[cyborg]

i think you have a winner with the location,,,just the angle is all wierd but you'll clean that up

[jct842]

Just the tip needs to be in the exhaust flow, some people have welded a bung on, installed the o2 sensor blocking part of exhaust and had poor results.

[dmartin95]

Feb 8, 2015 12:06:19 GMT -6 jerryscript said:

Feb 8, 2015 11:23:34 GMT -6 Bashan said:

Plan is to find a cheap sensor and scavenge the display from a cheap volt meter, trying to keep this below $100, kits run $150+.

Jerry, if all you're looking for is the o2 sensor, Here ya go: Bosch LSU 4.9 (this is a closed loop sensor) .... $60.99 to the door!

[dmartin95]

Feb 8, 2015 12:06:19 GMT -6 jerryscript said:

Feb 8, 2015 11:23:34 GMT -6 Bashan said:

I haven't purchased a sensor yet, but AFAIK they all do.  

Jerry, one more thing you should consider.... You're going to have to buy connectors, you may need a 5 volt supply depending upon the meter, etc etc..... I get that you're trying to do this on the cheap, but the kit's may prove to be worth the expense, unless you're extremely confidant in what you're doing....

I have an ecotrons wideband with gauge kit, now this specific kit has accessories that will allow me to data log to a laptop or Bluetooth device.... You will not need this per se', but it does come with the gauge, bung, and most importantly, all your connectors... It's the little things like the connectors that will jack up the cost... 

If memory serves correctly, the terminals in the actual O2 sensor plug have resistors in them, so you can't just hack the plug off.... 

I'm sorry, I don't by any means want to rain on your parade.... I'm just trying to push you to open that wallet up a bit more and just buy a "kit"... I think you will have a lot less head ache and have a better end result...  Now the ecotrons kit is very costly, I selected this specific kit cause I want to be able to log my data on my phone and analyze it when I get home....

Here's a pic of all the stuff that comes with it.....



I have an additional Ecotrons EFI kit that has a different O2 sensor that I'm installing on my Taida 4 valve engine.... I've got a lot on my plate when it warms up.....

[jerryscript]

Feb 8, 2015 13:29:38 GMT -6 dmartin95 said:

Feb 8, 2015 12:06:19 GMT -6 jerryscript said:

Jerry, one more thing you should consider.... You're going to have to buy connectors, you may need a 5 volt supply depending upon the meter, etc etc..... I get that you're trying to do this on the cheap, but the kit's may prove to be worth the expense, unless you're extremely confidant in what you're doing....

I have an ecotrons wideband with gauge kit, now this specific kit has accessories that will allow me to data log to a laptop or Bluetooth device.... You will not need this per se', but it does come with the gauge, bung, and most importantly, all your connectors... It's the little things like the connectors that will jack up the cost... 

If memory serves correctly, the terminals in the actual O2 sensor plug have resistors in them, so you can't just hack the plug off.... 

I'm sorry, I don't by any means want to rain on your parade.... I'm just trying to push you to open that wallet up a bit more and just buy a "kit"... I think you will have a lot less head ache and have a better end result...  Now the ecotrons kit is very costly, I selected this specific kit cause I want to be able to log my data on my phone and analyze it when I get home....

Here's a pic of all the stuff that comes with it.....



I have an additional Ecotrons EFI kit that has a different O2 sensor that I'm installing on my Taida 4 valve engine.... I've got a lot on my plate when it warms up.....

I do appreciate the advice! Connectors can be plugged into with the appropriate terminal end, not a big issue, I've done plenty of re-wiring in my day, all the way back to my teenage meltdown of the main wiring harness when I installed my first stereo wrong, and the college re-wiring of the full fairing on my Honda 550, all done before the age of YouTube instructional videos. I'll look up the spec sheets on various O2 sensors to get an idea of what I'm dealing with. From what little I've perused so far, most work on pretty standard voltage outputs that associate to basic lambda values. I may even just use a row of LEDs instead of a volt meter display. I spend a lot of time researching these sort of projects before even deciding if I'll actually do it, this one looks do-able so far at reasonable costs. Once again, I appreciate everyone's advice!

Here's a couple of DIY guides I've been checking out for displays:
www.scirocco.org/tech/misc/afgauge/af.html
www.aces.edu/~parmega/efi/temp/wb/guide.html

[dmartin95]

Cool... Everyone's skill set is different... I just wanted to make sure I wasn't linking you to parts you will not be able to ultimately use... If you know what you're doing, you will be able to save some $$$...