Cooling system

Hi and thanks for using 2CarPros.

The radiator cap is most likely normal if it was cold outside. However, you need to have the computer scanned for trouble codes. Since the check engine light is on, there will be diagnostic trouble codes stored which will indicate where the problem is originating. Now, the red lightening bolt indicates a problem with the electronic throttle control system, so that is most likely why you had the symptoms you described.

With that being said, it really needs scanned to determine exactly where to start. I realize most people don't own a scanner, but here is a quick video that shows how to use one. If you don't have one, most parts stores will scan it for free. Have that done and let me know what codes were found. They will be a four digit number preceded with a P. For example, P0300.

https://youtu.be/YV3TRZwer8k

Again, don't feel this is related to the cooling system, but rather with the electronic throttle control system. If you get the codes, I can better direct you with the how too's.

Let me know what you find.

Take care,
Joe

Yep, that will do it. Here is a guide to walk you through the steps and diagrams below to show you how on your car:

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (below). Please let us know what happens.