Fuse Problems....

Ok, so my car decided out of nowhere to blow its 15amp fuse FOR THE ENGINE! that is located inside the car... i replace it, and start it...It idles fine, as soon as I depress to clutch and give it gas, and it starts to grab for a nice easy take off. DEAD, blows the brand new fuse, I have looked in a lot of places like the main power inverter and all of my MAFT hook ups, cant find much...im confused. Anyone had this happen before? Any suggestions or hopefully solutions? O yea, and I tried resetting the ECU, still blows fuse.

Thanks,
Matt

O yea, and my tach is dead, it only comes on at about 2500 or 3000 rpms....and its still shaky...