I daily drive my car, basically everyday, and the only time this happens is during winter when its cold outside. My car will idle from 1200 rpm, to about 2k rpms then go back to 1200 then back to 2k over and over and over again. Ive swapped IACV but maybe I got a bad one again? Only other thing I could think of is me not running coolant lines to throttle body but ive never heard of anyone having this issue because of that. Maybe because of my colder thermostat and ecu is trippn? Car runs SOLID. Just this issue when cold.
Any info helps, thank you
I have a video if anyone wants to hear lol
This is the 3rd winter in a row with this going on and im over it