First it would not start after work, I thought it was a dead battery but then all of the sudden it started right up

once started my idle went crazy, normally its somewhere between 800-1100 rpm but tonight it was way up at 1900rpm and would not come down even after the car was fully warmed up

that it started the idle issue, it would rev up to 2000rpms then drop down to 1000rpms, then rev up and drop again, over and over, started this after it was warmed up


i have no idea what would cause this

my current known issus is something with the ECT(temp sensor), Its new but the car says its not working, so my fans run all the time and the car runs uber rich. Dont know why? But i never had a problem like this before


any ideas???