what is making my 04 pt cruiser overheat

im beside myself please help.I see a bunch of questions but no answers that fix the
problem. i cant go a couple miles and it over heats.it bubbles and spits water out under
the hood.i bought it in south georgia.got 45 mins outside town and ran hot, we replaced
radiator and cap and fan. changed oil.headed out again ran hot changed thermostat
headed home to atlanta again. same thing. tried again a few days later and made it 2
hours before it ran hot. i finally had to get it towed.. when i got home i had another
thermostat put on, head gasket replaced, water pump replaced and timing belt, still ran
hot replaced both high and low fan relays still running hot .......just please tell me what
it could be so i dont end up rebuilding the whole damn car.it seems to me it may be in
the electrics cause going different length before it runs hot. could it be a senors. im a
female and dont know alot about cars but no dummy either. ive learned alot from this
mistake of buying this thingany comments shared might enlighten me..............thanks
sandy