Heater problems

[Konspire77]

For some reason my car isn't getting any heat. With the heat turned up all the way and the air blowing full blast it comes out luke warm at best. The air is coming out just fine its just cold. My engine temp is fine I just don't get any heat and its getting cold where I am at lol.

 

[peajay]

air pocket, restriction in a heater hose somewhere, water pump about to take a s*** or blown heater core

 

[mactificent]

I'm having the same issue. 2008 M5. Husband but in new thermostat because initially it was running hot and he changed a tube that previous owner had taped up. Now it only runs warm when going fast (over 35 mph). When I turn on inside airflow all the windows fog then turn on defrost and cold again. any ideas.

 

[Ceasar1010]

Mine doesn't blow any heat at all. Where is the heater core anyways

 

[hornsfan10609]

Heater core is in the dash just like any other car. Check the cables on the back of the climate controls, one runs to the driver's side and the other behind the glove box to the blend door for the HVAC system.

 

[mountkr]

I've had very few problems with my Mazda6, but this morning, with temperatures in the -10s, the fan blowing heat in the car started emitting a high pitched noise. The noise increases as I turn up the fan, and decreases to nothing when I lower the fan speed. I have my heater set to allow outside air. Should I take it to the dealer or will the noise go away with warmer weather?

 

[Preferio]

I've had very few problems with my Mazda6, but this morning, with temperatures in the -10s, the fan blowing heat in the car started emitting a high pitched noise. The noise increases as I turn up the fan, and decreases to nothing when I lower the fan speed. I have my heater set to allow outside air. Should I take it to the dealer or will the noise go away with warmer weather?

Fairly common occurrence when ambient temperatures get as low as they are. After letting it run a few minutes, did it subside? My MSP will do it basically every winter, the 6 will do it occasionally, the RX8 doesn't do it.

 

[brandini]

I've had very few problems with my Mazda6, but this morning, with temperatures in the -10s, the fan blowing heat in the car started emitting a high pitched noise. The noise increases as I turn up the fan, and decreases to nothing when I lower the fan speed. I have my heater set to allow outside air. Should I take it to the dealer or will the noise go away with warmer weather?

Even easier, you might just have junk in the blower motor. Probably a leaf. I had a rock and a leaf in mine and it was like a baseball card in bicycle spokes at times.

 

[hornsfan10609]

It is very easy for leaves to fall into the fan motor while replacing the cabin air filter.