When soldering, Tin your tip with solder. And don’t buy cheap solder…once you’ve tinned the tip of your soldering pen, clean it with a wet sponge. Re-tin and have at her! Solder will follow heat and as you found out, it is HOT!!!! Great video!
This video is for a nissan, other makes may be different. A nissan expects the downstream o2 sensor signal to be bewtween 0.1 and 0.68 volts. If your voltage is to low use a smaller resistor, to high and use a bigger resistor. The voltage swing should still be pretty fast, only slightly slower than the upstream o2 sensor. You need to use a very small capacitor like 1uf but this may vary. Also you can try with the resistor after the capacitor or before. If I remember correctly my cap is after the resistor (o2-resistor-cap-car wiring). Good luck!
FYI, the computer must monitor the exhaust through a complete drive cycle, Google it, and then it will make a determination if the CEL stays off. If you fooled the ECU, then ur good. But some newer car ECUs will vary from Stochiometric to lean or rich and expect to see a change in the downstream O2 readings, but if you have the cap/resistor mod, the “sensor” output will not change accordingly and you are back to square one, aka P0420. 😮
Your video is incomplete. It takes time for the engine computer to run the catalyst diagnostic test, so the trouble code won't appear immediately if this doesn't actually work. Did your trouble code re-appear or not after driving it around for ~80 miles or so?
It looks like the positive of the capacitor was connected to the black wire. And that the negative lead of the capacitor was put to the signal wire. Assuming that the Black wire is a Ground, connecting the positive lead of a capacitor to a ground won't do any damage?
I used a 33pF electrolytic capacitor + 150kohm resistor and my output is basically flat line at 0.5V it fluctuates +/-0.05v. I don't yet know if the C.E.L. will remain off.
No, I was unsuccessful at keeping the CEL off. I am thinking that there is an electrical issue with the vehicle (2010 Chevy Traverse). I have since removed the RC filter from the sensor circuits after replacing the cats. And still no success
Consider the black wire is ground. After cutting it up, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xeFZP4lJbns.html and then connecting a resistor from ground to ground (black to black) is nonsense.
