Alright guys.. so I changed my o2 sensors three days ago. And put the down stream on 90 defoulers. I also capped my idle up valve. I still have a high idle. Also my CEL came back saying that both down streams are not reading? My idle is between 1-1200 rpm never lower. I don’t hear any vacuum leaks. Or what not and every hose I’ve disconnected dropped my idle. I do notice from a red light when I take off and then let off the throttle completely it drops idle almost stalls but catches itself pretty quick. So tired of these issues any help ?
Car : 1993 ls400 82k Miles.