Why my car get hot when im at a stand still but when I drive off it cools down.

Radiator fans working?

Another possibility cound be the temp control sensor. Ideally when you do all of that it should be changed (costs 15 dollars and under the thermostat housing). Also you may have a clogged radiator, to get it out and cleaned maybe more expensice than just buying one and putting it in. Ck the web and local parts stores for price comparsion. If you can wait ck Rockauto.com