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.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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 car has problems cold starting. It will start fine after warmed up. It has the engine code P0340

This is a common issue when the camshaft position sensor is replaced as the code may show up when there is a difference between the position of the camshaft and crankshaft position. I would suggest checking the compression as well...

Q: advancetrac and abs light on after cv axle replacement

This may be related to faulty wheel speed sensors which are located at each of the four wheels. These sensors monitor wheel speed which is relayed to the ABS system. When the ABS system detects an abnormal speed for the...

Q: I just put in a new radiator and a new thermostat in my Cavalier and I'm still overheating there's no leak but my water keep disap

Anytime an engine is overheated you may warp or crack the cylinder head that may cause coolant to get into one or more of the cylinders. You should first have the cooling system pressure tested to see if the cooling...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.