Ford Focus Revving at idle and hard start
So I have 2005 ford focus which i bought used. When the car starts it sometimes has some difficulty. Even though its a nice spring day its like starting a car in -30 degree weather, it just seems to hesitate a little bit. But sometimes the car will start, and then shut off again. So I really have no idea what this is, could it be the fuel pump?
Also once the car has started it always revs up to 3000 rpms without me pressing the peddle, and then it slowly goes back down. At first I thought that was just how the car worked but I know someone with the same year focus and it doesnt do that. Please help!