Q: Q: Why is my car running hot?

asked by on

No leaking car runs hot and smoke sometimes shut off and doesn't have full speed
My car has an automatic transmission.

Great question and I understand your frustration. I want to go through a few steps to ensure we find the issue with your car and hopefully save you some money. So your car is overheating without leaking? Here are few things to check:

  1. Check your thermostat. I want you to get your car to operating temperature and see if your upper radiator hose is really tight. If it is your thermostat you won’t be able to squeeze it more than a little. There is a way to check it but using a lighter to see if it compresses. You can hold a flame to the back side of it (the round part that is copper). If it compresses then it is good.

  2. Check your oil and your antifreeze. See if it is mixed. If so then you are having a problem with a blown head gasket.

  3. If it is overheating and the other problems aren’t bad then you could have a problem with your water pump. But wait, before we go there and decide that this is the issue lets take a few more steps.

  4. Let’s look at your antifreeze. Is it extremely low? If so then you need to fill it. With the recommended antifreeze.

  5. If it is good, I want you to open your upper radiator hose. Make sure you use safety glasses especially if the car is still warm.

  6. Does it look like there are different colors of fluid in there (red, green, yellow, orange, blue, purple, etc). If so, you will need to flush your cooling system vigorously maybe 10 times to get everything out.

  7. If everything else is fine, I still would recommend flushing your system just to make sure you aren’t experiencing a clog somewhere in your system.

These steps will definitely get rid of your problem. If everything else is fine and nothing mixed, thermostat good, and no clogs you will probably need a new water pump.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Why is my car running hot?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: On the 04 supercharged impala does it need to be recalibrated after fuel pump replacement?

If the fuel pump was replaced because it was faulty, there should be no need for any sort of re calibration to any part of the engine management system. It should function as it did before the fuel pump replacement....

Q: Car shaking when applying brakes and going slow. Check Engine Light is on and engine idles roughly.

It sounds like you may have a vacuum leak on your car. Check all vacuum lines and make sure they are in good condition and connected. If you don't see a leak you can spray some carburetor cleaner on the...

Q: I get trouble code P2138, but I have cleared it and the car works for a while. Now I am getting trouble code P2127 along with P2138.

Hi there. The pedal position sensor on the gas pedal has lost signal for the switch 'E' and 'D'. The code P2138 means that the computer has discovered a malfunction with the pedal sensor. Check the harness to the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...