Skip the auto shop - Our mechanics make house calls

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.

A: Great question and I understand your frustr...

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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: My dome light and blower motor quit working

You may find that this vehicle has many red wires throughout the vehicle that powers different circuits on the vehicle. This wire could have went to another system, so you would need to check to confirm what this dangling wire...

Q: I am looking to buy a 2000 lincoln LS with 186k miles on it. The only issue is that the owner told me that he gets misfire codes

The codes P0302 and P0307 are misfires on cylinders 2 and 7. I agree that you should have a tune-up on the car if you decide to purchase it. You would need to have the spark plugs replaced and the...

Q: When I make a hard brake then try to accelerate it feels like the bed shifts.

This may very well be a bad U-joint in the drive shaft. When these have too much slack or play in them, this can cause the same feeling you are describing. As you accelerate and more torque is applied to...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...