Q: Why does the heater blow hot air for a short time and then blow cold air?

asked by on October 31, 2016

It takes a long time to get hot air and i turn it on and it works fine for like 2 min and then starts blowing cold air

My car has 231114 miles.
My car has an automatic transmission.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Emergency brake stuck on the floor
It sounds to me like the return spring may be to blame here. Try pulling back on the pedal while pulling the release handle. If it still wont move, look and make sure the release handle is pulling the release...
Electrical system problems on 2007 Buick Rainier
This was a common issue in many GM vehicles that is typically caused by a short in the system that controls these features. Tracing the short can be very time consuming and difficult to track down. If you would like...
When im driving the steering wheel start shaken when i get up to speeds to 50 or 60 and its the driver side
From what you've described, you may just have a wheel balance problem where a weight came off. This could also happen if you used tire stop sealant for a leak in your tire. These will both cause excessive vibration above...
When I'm driving, my car does this little lurch thing constantly, like it has little accelerations.
Hi there. Check the idle air control valve (IAC) to see if it's plugged up. When the vehicle sits, sometimes the IAC valve can stop working and get plugged up. Remove the vacuum hose to the IAC valve and see...
PO700 code is read on a code reader.
Hi there. The computer to the transmission (TCS) has failed and is not responding to any sensors and solenoids. When the TCS fails, it shuts off power to the transmission putting it into a limp mode as if the harness...
My car is overheating there are no leaks all the hoses are intact and I just changed my thermostat 6 months ago. What might be cau
A diagnostic would determine the root cause of the overheating. Common causes of overheating include a faulty thermostat (yours was replaced but that is no guarantee that it is presently functioning), a plugged radiator, collapsed hoses, and a faulty water...
loud noise from drivers side rear wheel
If a bearing in the differential has failed, the differential has to be opened up and rebuilt or replaced. You just want to make sure that the noise is not from a failed wheel bearing because if you have a...
I have a 1994 acura integra in great shape but when I come to a stop while in traffic my car idles weird and acts like it wants to die
What you are describing sounds like a dirty or failing idle air control valve. The idle air control valve (https://www.yourmechanic.com/services/idle-control-valve-replacement) monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...
do you do electrical work
Hi there. It really depends on the type of electrical work, your location and the severity of the problem that will determine whether or not we are able to complete the service required to resolve your Chevrolet's thermostat problem. The...

Related articles

The Best Used Cars to Buy If You Live in a Tropical Climate
If If you live in a tropical climate, most of your vehicle purchasing concerns will be essentially the same as if you lived anywhere else – you want a car that looks good, offers decent gas mileage, and suits the...
How Long Does a Heater Blower Motor Resistor Last?
Keeping Keeping the cabin of your car warm during the frigid temperatures of winter can be a lot easier said than done. If even one of the components of the heater are not working properly, it can prohibit the warm...
The Best Tool to Eliminate Air Bubbles
Air bubbles can form while mechanics perform service on coolant systems. A vacuum coolant filler helps eliminate this problem to avoid serious damage.