Car blower, blows air inconsistently


#1

my blower has a mind of its own. when the vent is on it can take up to 20 mns. for air to come out. then if I change it to defrost the same thing. I think it possessed LOL. but in reality it is quite annoying. the air does not blow on either setting for 20mns. any clues


#2

What car? They vary. In some the HVAC doors operate by engine vacuum; others use small electric motors or solenoids. Is the blower motor working only intermittently? Have you tried all its speeds. Sometimes they work only on High.


#3

Also, in some vehicles, the engine has to warm up enough to trip a switch to allow the fan to turn on high. That’s how my 2017 Accord works.


#4

Problems w/hvac vent door actuators are a pretty common report here. I suspect that’s what the problem is.


#5

Its not door vents its the dash vents


#6

It is likely that the blower motor is failing, if a mode door were in the wrong position the air would still blow out somewhere.


#7

Vent door is another term for the flaps inside the HVAC ducts. They open and close to change the direction of the air flow.


#8

The problem is probably the resistors,plug harness or both. try getting the resistors or plug harness replaced and if it’s still not working bring it to a mechanic.


#9

It works on all speeds.just takes time to switch from defrost to the vent in the front

Funny thing is the fett blower is always working.


#10

Typo? What do you mean by “fett”? Do you mean the heater blower motor is running at all times, even when the heater fan is supposed to be off?