My2005 4 cyl 2.4 Toyota Camry keeps blowing the EFI fuse.I changed the fuel pump, drove it 25 miles and it blew it again. Any suggestions? I changed the EFI relay under the hood too with same results.

need a meter to test ignition system switch--harness--relay -starter

you may have a short of some kind, when a fuse blows repeatedly it is no good just replacing, you are being told that something is wrong with the equipment.
You will almost certainly have to visit a technician for a diagnosis. It is unlikely to be something that an inexperienced end user can sort out I am afraid.

GOOD LUCK

Robert: According to CarGurus.com: " I agree it may not be your fuel pump. You can access the pump under your back seat, underneath the cloth under there. You will iummediately see the plug and the screws to open the little hatch. My 1986 Camry also has a problem with not getting any fuel and thought it was the fuel pump. turns out I keep blowing my efi fuse so i unplug the power wires to the fuel pump and it still keeps blowing the 51a efi fuse. So we have narrowed it down to being an electrical problem. We think it is a shortage or a bad relay. So do not instantly run out and think it is your fuel pump. If you are blowing fuses unplug the power wires to the fuel pump and try to crank the car if the fuse still blows then it is not a bad pump, if it does not blow then there is a shortage in the wires in your fuel pump. Hope this helps I will let you know exactly what the elctrical problem is in my car once we do a complete run down."

Lets start at the beginning. The engine computer grounds the pump relay. The relay gets power from the EFI relay when the key switch is on and from the starter fuse when the key switch is in the start position. Do you know if the pump relay is getting power from both sources and a ground from the computer ? Can you run a hot wire to the blue black wire going to the pump and keep it running ?

That fuse powers the engine computer and various sensors.
You may need a repair book or shop manual to get the wiring diagrams for checking everything in the circuit.

A little bit of gas in your carburetor and change the spark plug that you should be golden

There is not one on the 4-cyl just for the fuel pump. It is supplied by the EFI 15A fuse thru the EFI main relay and the circuit opening relay. See here p 177

http://www.turboninjas.com/camry/eg1.pdf

On the V6 it is similar, see p 575

http://www.turboninjas.com/camry/eg2.pdf

There is not one on the 4-cyl just for the fuel pump. It is supplied by the EFI 15A fuse thru the EFI main relay and the circuit opening relay. See here p 177

http://www.turboninjas.com/camry/eg1.pdf

On the V6 it is similar, see p 575

http://www.turboninjas.com/camry/eg2.pdf

There is not one on the 4-cyl just for the fuel pump. It is supplied by the EFI 15A fuse thru the EFI main relay and the circuit opening relay. See here p 177

http://www.turboninjas.com/camry/eg1.pdf

The efi,fuse also controls the fuel pump,so,,I would think,the fuel pump has locked up.