By November 7, 2013 2 Comments Read More →

Overheating Car – What To Do

overheating carHelp! My car is overheating and I don’t know what to do about it. I have to add coolant to the plastic overflow bottle regularly and the temp gauges starts to climb up so I know I have to add more coolant.

Yep, I hear this all day long. First thing I do in my shop when I get an overheating car complaint is start with a cooling system pressure test to rule out a possible coolant leak (which is usually what is happening), you could have an  internal coolant leak inside the engine from a “blown head gasket” or this could be from a simple external leak like from a leaking radiator hose or water pump.

I found this video where the guy is using a cooling system pressure tester. You can rent one at your local auto parts supplier or you can pay a local mechanic to do it for you.  If you are constantly adding coolant, do this step first.


If you are NOT constantly adding coolant to the system you might have a restriction in the radiator, a “stuck” thermostat or a faulty radiator cooling fan motor…which will usually cause an overheating issue when stuck in traffic at idle for extended periods of time.

Watch my video below where I am talking about the different kinds of overheating situations and what you can do yourself to narrow things down and locate the problem yourself.

If you still need help, use the comment section below to send me your question and I will try to help you from there.


Austin Davis

Posted in: Over Heating

About the Author:

Austin Davis, consumer car repair advocate. "Hi there! I love to help people solve their car repair problems and I hope my site was helpful to you today. Thank you for stopping by."
  • Austin Davis

    I would check to make sure the electric cooling fan at the radiator is coming on, it should cycle on and off as the engine heats up and be on constantly when overheating. Check that first and get back to me.

  • Randy

    Dear Austin Davis,

    My 02′ Buick Rendezvous started to overheat a month ago. When I would sit at a stop light or anything similar my car would start overheating(Hot Coolant light comes on, then when I start driving the light will go off and the car would not be overheating. I had a thermostat replacement and it is worst than before, now it overheats every 30 feet I drive. It is full of coolant. I had the lines flushed. I had someone check the radiator cap it was fine(I guess for corrosion). If possible, can you help me with a solution to this?

    Thank You!