Samford

05 cobalt. I just bought this car with slight front damage. I put new condenser, radiator, and elect fan on it. Fan wasn't coming on at 210 degrees so l checked fuse it was bad. After putting new fuse in the fan came on when was turned on and stayed on for a couple seconds after turning off the car. So I unhooked battery and now fan won't come on even at 226 degrees.So I put new temp sensor and thermostat in and it still won't work. (Already replaced relay earlier) So I tried taking relay out and jumping across and the fan works. I then took fuse block apart to tighten connectors thinking relay wasn't getting good connection put it all together and now fuel pump won't work. Now I can't even start it where before it started right up. I have check all the fuses with a tester and their all good. I wondered about anti theft tried turning key on and off 40 times still nothing. It cranks over but fuel pump doesn't come on. I know fuel pump is good cause I jumped it over thru the relay. I need some help.