1) Become agitated about race 2) Conk out on the freeway 3) Get a hotbox 4) Heat 5) Heat up 6) Hot up 7) Make too hot 8) Need coolant 9) To become excessively hot 10) To excite or agitate 11) To heat excessively 12) To heat to excess Found on https://www.crosswordclues.com/clue/overheat