Heater blowing cold air

So you are hitting on the two common causes of this. Here is a video that will give more info on this issue:

https://youtu.be/SNRb6pSwYuU

I would suggest we start with access the blend door and remove the actuator (they call it an AC radiator servo #2) and move the door manually to make sure the heater blows hot. It sounds like the heater core is operating as the lines are hot so that is a good sign. With the other info on the blend door I would start there. Let's run through this and let us know what you find. Check out the diagrams (Below). Please let us know what happens. Thanks

It sounds like the temperature blend door actuator (servo motor) is not working correctly here is the location in the diagrams below.

this guide can help as well

https://www.2carpros.com/articles/car-heater-not-working

Also, what temperature is the coolant reading? If it is not warming up properly, then that will cause the heat to be cold. Have you checked the heater core hoses? There are two hoses that come out of the engine and go to the firewall. These hoses are always right next to each other. If one is significantly hotter than the other after the engine is warmed up.

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

Hello,

I found this diagram for a 2011 it might be the same. Air blend door servo motor. Check out the diagrams (Below). Please let us know what you find.

Parts go out all the time so the car being "too new" has nothing to do with it obviously because it is not working. I would replace the air mix servo motor in the diagram I sent above.

Both heater hoses are hot coming out of the car's firewall correct?

How exactly did pep boys "diagnose" it? I am always suspicious of diagnoses coming from parts sales people. Most of them do not know a whole lot about cars, just enough to identify and sell parts and sound like they know what they are doing.

Again, I ask, what temperature does the engine reach? And have you touched the heater core hoses to see if they are both warm when the engine is warmed up and the heat switched on?

Hmm, well I guess that is that then. As far as how to check the engine temperature, your car should have a temperature gauge. As long as it is getting somewhere near the middle it should be fine. But if it does not get near there, then your car will not have heat, and probably needs a new thermostat.

And for checking the heater core hoses, if you open the hood and look at the firewall (the wall between the engine and the passenger cabin) you will see two hoses right next to each other going into the firewall. The outer diameter of them is probably approximately an inch. If one of those hoses gets warm, but not the other, then it means that the core is clogged and you would need to flush it out. If neither is warm, it could indicate that you need a thermostat, or some other issue is going on. If they are both warm, then that points to a problem elsewhere in the heat/AC system.

That is the basic path that I was trying to go down. Let us know if there is anything else we can do for you.

Good morning,

Make sure the coolant level is correct.

This could be a clogged heater core. It would need to be flushed out to get rid of the debris so you have heat at idle.

https://www.2carpros.com/articles/car-heater-not-working

A water pump could also cause this issue. The impeller could be the issue.

https://www.2carpros.com/articles/water-pump-replacement

Roy

Make sure the coolant level is full. Make sure the engine is operating at a normal operating temp. Check to make sure the blend door is working properly.

this guide can help

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back.

It sounds like you have a temperature blend door actuator that is not working, bad engine thermostat or the engine is low on coolant, here is a video and guide to help you find the problem.

https://youtu.be/SNRb6pSwYuU

and

https://www.2carpros.com/articles/car-heater-not-working

Please run down these guides and report back.

With the engine at full operating temperature, locate the two heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.

Could be a clogged heater core, try reverse flushing through the heater hoses