So what needs to be fixed here...?

93 probe was doin ok then all of a sudden the battery level is low the oil pressure is low and its overheating. there was coolant sprayin out of the cap so we replaced that and i thought that would fix the problem but it didnt. theres also a light on that says "fuel cutout" what does all this mean and what am i gonna have to fix here also is it gonna cost me an arm and a leg?