no air movement at all inside the vehicle...

[peckhamjusten]

this problem is on a car of mine....when i bought it i noticed that the blower wasnt blowin air inside the vehicle but u could hear it blowin up a storm on the outside. i replaced the blower motor, heater core, checkd the hoses n they are warm n flushed the antifreeze n still no air movement inside. i need some more information cus its pretty cold outside n the only heat i have right now is from a lil heater that plugs into my cigerette lighter to defrost the windows
thanks

[wde3477]

Offhand, sounds like the diverter dampers aren't lined up right, essentially dead-heading the fan.

How this would happen, I don't know. Without knowing the type of car, don't know how difficult it would be to access the various dampers.

Easiest quick fix may be to focus on the floor vent - try to find its damper and ensure that it's open.

[projectSHO89]

Check for a blocked evaporator core. All airflow must pass through it.

There is no combination of diverter positions that can block off all airflow.

[BPofMD]

Is this vehicle new to you? Do you know if the ventilation system worked before? Does it have A/C? We need some info to help you.

[peckhamjusten]

it has ac. not all air is blockd but enough to were u kan barely feel it wen its on high n ur hand is right on the vent. i knew the car wich is a 89 le sebre, had this problem in the summer but didnt think netin of it untill it got really really cold.

[Holmesuser01]

I doubt that you needed to replace the blower motor.

Try this,

Re-remove the blower motor and feel around towards the center of the car inside the blower box and see if it is full of leaves. Things like this get chewed up by the blower fan and make a heck of a mess. Use a vacuum with a crevice tool to get the junk out.