I just changed out the crankshaft position sensor on my '01 Aztek and she starts up great but doesn't stay on for long. I am thinking this has to do with a relearn for the sensor but I can't find anything online about this for the Aztek if its even necessary for this vehicle. All codes are gone for the sensor now but again it wont stay on for long and stalls out pretty rough. Does anyone know if this is a relearn issue or if the Aztek does or does not require one for CPS (crank shaft position sensor).