answersLogoWhite
Heating AC and Engine Cooling

Why is the heat in my car alternate between hot and cold?

141516

Top Answer
User Avatar
Wiki User
2014-09-18 00:21:26
2014-09-18 00:21:26

There are many reasons that the cars heating system may alternate between blowing hot and cold air. Some common causes of this include the heater core and air pockets in the coolant.

1

Related Questions

User Avatar

A car heater taps off engine heat. If you aren't driving, then the engine is cold and there's no heat for the car heater to use.

User Avatar

well it could be because of the heat. if its cold out and you have the heat on in the car, then you will get hot and that will cause the window to fog.

User Avatar

it maybe your heater core is going out recommend replacing it and go from there

User Avatar

try checking your battery usually it is the lack of cold cranking amps

User Avatar

Yes, and it can also make your car to over heat

User Avatar

You can not get heat from cold water, The engine has to run long enough to get the water in the engine HOT. That is were you get heat from HOT WATER-- Coolent

User Avatar

You either just need to wait for it to heat up when the car turns on, or it's broken.

User Avatar

because the seats and carpet and such store and release heat.

User Avatar

Everyone says it does but I was A sales rep at a new car dealership for A couple years and I could never tell that the black one was hotter that the white, In the summer they were all hot as fire,, In winter they were cold, cold, cold.

User Avatar

The reason why it still gets hot in a car on a cold day when the sun is out is because the cold air cannot get inside the car to keep it cool. But the sun is able to shine right through the window and heat it up.

User Avatar

The heating system doesn't get heat until the car warms up and the thermostat opens.

User Avatar

A car takes a while to heat up if the engine is running slower. Cold weather and cars just do not mix. The car will warm up faster if the driver can sit in the car and press on the throttle a little.

User Avatar

Most of the time when it is cold outside the car and warm inside the car that will happen. It's an affect when the heat and cold come into contact with one another. Test this when your inside your car. Breathe on the glass and it will frost up. ----

User Avatar

Could be low on coolant, a stuck open thermostat or a partially blocked heater core.

User Avatar

When any car idles, it lowers the ignition energy (but not completely) to keep the car running. When it is cold outside, your Subaru's ignition energy is lost through heat because electricity also is measured through heat. When there is less ignition energy when it is already running on a lower ignition level, the car (your Subaru) is not likely to idle.

User Avatar

Clifford Car Alarms sell a variety of car alarms. From car alarms with remote control to car alarms that can withstand heat and cold with good security included.

User Avatar

If you have the car window(s) open or the car air conditioners on, turn them off when you get cold. If none of the things listed above are turned on in the first place, turn the heat on. If you don't have any car heaters, perhaps you can buy a coat somewhere. turn the heater on...

User Avatar

The heater in your car uses waste heat from the engine to heat the car. When the engine is not running there is no heat to distribute.

User Avatar

Yes, but car speakers are made more durable for the harsh environment they are likely to encounter like the cold, heat and rain.

User Avatar

Cold tires is just a term used to describe a tire that has not been driven lately. Driving the car creates heat in the tire thus increasing the air pressure. That is why you should always check the air pressure when the tire is cold or has not been driven for a few hours.

User Avatar

The cold causes the air pressure to reduce. Heat would cause it to increase. Cold air is more dense, heated air expands.

User Avatar

If it's in a car, hot air is just the engine's "spare" heat, therefore cost-free and cheaper than cold air...


Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.