Why does my car have AC but no heat?

Why does my car have AC but no heat?

Faulty Thermostat A faulty or broken thermostat is the most common cause of your car’s failing heat. Stuck open or stuck closed, the part can not only cause issues with your heat but also your engine’s cooling system. One becomes an issue of comfort, the other becomes an issue of “Oh no, I’ve borked my engine.”

How do you troubleshoot a car with no heat?

First, check your coolant level to be sure there is enough liquid in there to even get to your heater core. If your radiator is very low on coolant, you’ll get no heat. If your levels are okay, you either have a bad water pump or a thermostat that isn’t opening.

How much is a thermostat for a 2001 Pontiac Grand Am?

2001 Pontiac Grand Am Thermostat – from $9.99+ | AutoZone.com.

Why is my engine not heating up?

There are a few potential culprits for why your car engine coolant may not be heating up: Coolant Level – The first thing to check is the coolant level! Air Lock – If you have had a coolant leak, or have recently drained and filled the system, then you may have air lock.

Will a bad radiator cap cause no heat?

Radiator cap: Your radiator cap regulates the pressure in the cooling system, acting as an escape valve if the pressure gets too high. If it sticks in the open position, there will be insufficient pressure in the system, and the coolant will not get hot enough, reducing the heater’s output.

How much is a thermostat for a 2002 Pontiac Grand Am?

2002 Pontiac Grand Am Thermostat – from $9.99+ | AutoZone.com.

Will thermostat open with radiator cap off?

It does. It circulates through just the engine block until the thermostat opens. Then after opening it will flow through the block and the radiator. Fluid in the radiator should not move when the thermostat is closed.

Why is cold air coming out of my vents when the heat is on?

Your Air Filter Is Dirty Clogged air filters could be causing cold air to blow out of your vents. A dirty air filter can block airflow over your furnace’s heat exchanger, which can cause it to overheat.