I haven't seen many that use Volt instead of Amps, but this could help you.

Hi, how about psdata.

Droidkiller wrote:Thanks guys,I'll check it next time when the car will be here again.

You can't really check a 4 wire AFR sensor with a scope, provided you own or have a milli. amp clamp.Check them with a scanner, easiest way to do.

Hi all,I have checked O2sensors on Subaru Tribeca B9,6cyl boxer becouse of intermittent P0420in memory.(Cat efficiency below treshold Bank 1. Pre cat sensor signals exactly the same,but all two bank's post cat sensors signal shows unefficient catalyst system,signal fluctuating by B1S2 and B2S2 too....

First of all your settings are poor. Don't run Auto and put more time on the screen. 500ms/div and samplerate 5MS .Hope thats helps.

Looks like your PC is not seeing the Pico, or your software is corrupt. Can activate start button as soon as software is opened. Hope that helps

not much to see there. KV very high. Try the HT leads again. More time on the screen. 500ms/div -5MS and no trigger-repeat. you will get 4 screens. Also do not use Auto or any filtering. Filter after you got your screens. Also label the channels. capture at idle and one under load. Hope that helps t...

here are some files. any help appreciated what i can see is... voltage varies a lot across all 4 cylinders despite having all new parts and plugs with identical gaps. changing coils increases the peak, but still i get this big variation. engine compressions are all identical i changed the coil satu...

roadandtrack wrote:define "primary current" please so i can make sure i'm logging what you expect

How about looking it up in "guided tests"

roadandtrack wrote:thanks, if you open the files you can move back and forth

yes, i can try logging for longer

yes I know. Your settings are poor. Also include primary current.