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I have an old, old legacy Edge Evolution programmer/gauge set that uses a specialty EGT probe. The probe wire goes into a little black box that that a wire that connects into the side of the OBDII connector that goes into the Evolution. I've had these go bad before and replaced them, and mine went bad some time ago and I'm finally trying to replace it. But I can't seem to find it for sale anywhere. It exists on Edge's website and doesn't say it's not available but when I click on the Buy Now button nothing happens. I'm wondering if they stopped making the thing.
If anyone knows what's up with this part or knows where I can get one would you let me know?
I would suspect it would be a K type thermocouple. What’s in the box is another story. But K thermocouples are common.
I am sure it probably is a standard thermocouple, but it's hard wired into the electronics. I tore it apart to see if it would be possible to replace it with a standard thermocouple, but it was literally molded into the plastic. See the link I posted above to see what it looks like.
Do you have pictures of when you opened the box up?
In my jobs, I worked with thermocouples for 35 years and still do. Within the braided area, if typical K will have yellow and red insulation, Chromel+ / Alumel – alloys. You can have a cold junction, splicing of the wire, which we did all the time. What they are doing in the box, again, can vary. Repair will depend on what failed.
The box at least on the SCT is taking the Type K thermocouple output (Millivolts) and converting/scaling it to an analog 0-5V signal. There’s a little chip in there and basic electronic circuits.
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