Q: Why is my car running hot?

asked by on November 04, 2016

I just replaced the full radiator and fan on my car. And since then it started running hot only when driving

My car has 154500 miles.
My car has an automatic transmission.

Hi there. Your vehicle running hot only when driving could be the thermostat only partially opening. It may be the result of air trapped in the cooling system when the radiator was replaced. The cooling system may need to be bled.

A cooling system flush would resolve the trapped air. I recommend having your vehicle’s overheating problem diagnosed by a certified technician, such as one from YourMechanic, so that the right repair can be made.

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

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

Drivers side wheel feels loose

It is very possible that you could have an issue with your steering or suspension parts. You may have a ball joint, tie rod, or wheel bearing that has some free play. I would recommend having your wheel lifted up...

My car still wont start and I just bought a new battery

There are a couple of problems that might be described as a "whining Noise" Have a friend look under the hood and watch the belts and stuff while you try to crank the car. If he sees that the engine...

Why is my truck running hot? Where is my coolant going?

When a vehicle overheats when at a stop, this is a sign that the cooling fan on the front of the motor is not pulling enough air through the radiator. Of course, if you are loosing coolant, this can cause...

Related articles

How to Prevent and Handle an Overheated Engine
An overheated engine can seize the motor completely. Learn how to prevent your engine from getting too hot and causing damage.
Mitsubishi Certified Pre-Owned (CPO) Car Program
If If you have been shopping for a used Mitsubishi vehicle, you may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on...
Symptoms of a Bad or Failing Coolant Tube
Common signs include low coolant levels, visible coolant leaks, and engine overheating.