I'm sorry this maybe a stupid question but I have been told 2 different cases.. 98 zx2 escort car getting hot at long idle/traffic This only happened recently right after I had to change the temp gauge sender and also try and diagnose why my ac clutch wasn't coming on. changed the switch gauge read normal. tried to check the clutch, checked Freon no pressure changed the low ac pressure switch nothing so said forget it ill fix it when I have the funds.. Well I drove to work the next day, noticed that after a good bit of driving and getting stuck in traffic, my temp crept up, if I drove I was ok, but idle it wanted to overheat. I did check the top radiator hose and it was firm, even though I changed the thermostat with a parts store brand about 11 months ago. I was told if the ac clutch isn't kicking on then the fan wont work, I don't see how that is if there is a switch for the fan on top of the thermostat housing......but please someone tell me if I'm wrong.