fuse 41 stall

I have a 2004 ford explorer v6. it badly idles at 500 rpms. it sometimes stalls when idles down when breaking or downshifting into first at a stop or start. when it stalls it blows my fuse 41 in my box under hood. if I replace the fuse. it runs till stalls again but if I don't replace fuse no start. it still has full power but no start, not ever a little crank, nothing. I have a check engine and check gas cap light on with code p0457. I was told that it was a evap leak. I checked the cap and all good and any hoses that are visible are fine. I currently drive it with two feet, one on the brake and one on the gas just so that the car doesn't idle down to a stall. could I have overlooked or have a short for a wire or something that would just do it.