Overheats at red lights
My car us a 2002 Chevrolet cavalier and
it overheats when in a drive thru or red
light but temp gauge goes back to
normal when I am driving
Most times it's the radiator fan that is not working. Low coolant level or air in the cooling system would contribute as well, Have the cooling system tested to determine the exact cause.
Sounds like the radiator cooling fans are not coming on when they should. Unplug the coolant temperature sensor and start the engine. The check engine light will come on, ignore it. The radiator cooling fans should come on at high speed immediately. If so, replace the coolant temperature sensor. If not, check the fans and the fan relays in the underhood fuse box. Hope that helps! Jim