Why does my car over-heat at stop lights?
My car's temperature gauge will go to hot if I sit at a stop light or have the car in park. Also, it blows cold air out of the vents.

allik80, Iowa
Visitor Comment

 

Check that the fan is working properly.

I had the same problem on a car I previously had and noticed that the fan was not working.

Chris
Visitor Comment

 

Check the coolant level.

Inadequate coolant can not reach and flow through all engine coolant passages. This causes the engine to run hotter than it should.

If coolant is not filling the engine passages and heater components, it will not flow into and through the heater. Air blowing from the vents may be cooler than it could be.
Please provide ideas & experiences for other visitors.
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