05 wrx, stage 1, catback, cobb intake
Fixed my power issue (stock uppipe was clogged by a broken apart cat... ) so i played safe and got a used td04 mated to a 2.5in catless UP.
Now im having these weird a** idle issues...cold start the car idles up to around almost 2.5k then drops and sits steady between 1400 and 1800. after warming up and driving a bit If i put the clutch in the rpms go up and down about 500 then level out at about 1700. Sometimes if im driving on the highway in say 3rd gear and im at about 4k rpms put the clutch in to shift to 4th and the rpms stay at 4k or go a little higher...
and after drriving for a while sometimes ill come to a stop and my cars idle will drop (still high though..about 1200rpms) and lope between 1200-1300 and sound cammed, CEL comes on instantly when it does it. But scanned with my AP no codes show.
Had it doingg this last night, put her in test mode, then scanned the codes and this is what i got.
P0851 - Neutral Control Switch Input Circuit Low
P1153 - o2 Sensor circuit range/performance High (bank 1 sensor 1)
P1152 - o2 Sensor circuit range/performance Low (bank 1 sensor 1)