yeap cool, im pretty sure this is the problem on mine
cause i drove it for like a month with it disconneted, i didnt even know until i serviced the car and i noticed it.
pluged it back in and car idled lumpy and crap so i dc it, and idled fine but it would stall randomly when coming to a stop.
its connected back up now, but on cold start it idles funny but ok when warm, i had to play around with it to get it idling ok, not perfect tho.