Skip the auto shop - Our mechanics make house calls

Q: Is it my thermostat in my car that is not working?

asked by on

My car has recently went hot on me. Me and my boyfriend bought coolant and put water in the container but , it still went hot. We put on park while the car was still on and we tried to see if it was steam or smoke that needed to aired out; and we also turned on the car and turned the heat on it was something we looked up on the internet so we tried it; but it was doing the total opposite it was cold air coming from the vents when we turned on the heat then when we turned it on cold it was heat coming form there.
My car has an automatic transmission.

A: You are correct, you probably do have an is...

You are correct, you probably do have an issue with the thermostat. When your thermostat is stuck in the closed position it doesn’t allow coolant to run through the engine which is why you have the cooling effect. It will also overheat because it isn’t allowing the coolant coming from the radiator to go through the engine. If you replace your thermostat your issue will be fixed. If you would like one of our professional technicians to repair your thermostat you can book one in your area.

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: slip indicator light staying solid

The solid illumination of the slip indicator warning light signifies a malfunction in the Vehicle Dynamic Control (VDC) system. VDC is a version of "electronic stability control" and is a very useful safety feature. Occasionally, the slip indicator light comes...

Q: Can i replace a california emissions fuel pump witha federal emissions fuel pump on a 06 nissan altima manual transmission

When you go to replace your fuel pump and find that there is a big difference in the 49 states part versus a California certified part you will need to use only the California certified part since some vehicle emission...

Q: Car is losing power and the temperature gauge reads high.

Hello. From what you've described, most likely, your engine has had a head gasket failure, perhaps because of a failed thermostat - which could cause the "temperature way up, then backs off" cycle you describe. A failed head gasket means...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.