I went out to start the buick up last night and it wouldnt start. So I started to listen and when I would turn the key on the fuel pump wasnt kicking on. I would let it crank and after I would stop cranking I could hear the fuel pump come on and run for a few seconds then kick off. I tried for about a half an hour to get it started, with no success. Then I went out this morning and it fired right up and I didnt have a problem all day. So it is working now but I dont want it to do it again when I am somewhere other than home What do you think it could be? the relay? the pump? Sorry for the length, any suggestions would be appreciated.