i have a 2001 cavalier is the coolant system connected to the A/C system ? at a stop when sitting at an idle it will occasionally start to run a little hot ...normal ?
When you turn A/C on, it adds more load to the engine and turns on the cooling fans. Make sure the cooling fans are actually coming on when A/C is on. If not, check cooling fan fuse, relay, wiring harness and fan motor
Not normal. Are you loosing coolant? Have the system bleed of air, check the cooling fans for radiator working, and if thermostat is stuck, (check for exhaust is cooling system look for air bubbles or test kit, check for coolant in exhaust look for steam or white smoke, if so Head gasket issue.)
Please start a new thread next time but for now go to this page (copy & paste to browser). https://www.cargurus.com/Cars/Discussion-t2176_ds523342
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