why when i turn my heat or air on, the first two levels do nothing at all , but the third and fourth do?

Question

the first 2 levels dont blow a single bit of air like they are supposed to, but when i get to the third and fourth level, it blows air?

1999 chevy cavalier

Answer 1

i own a repair shop,,and there is a blower motor resistor mounted on the heater box ,,it has gone bad on it,,mine does the same thing i only have 3&4 speed on it,,im going to fix it before cold weather gets here,,there,s 2 little screws that hold it on,and then you un plug the wires from it,,there easy to do and cost around 20 bucks i think for a new one,,i usually go to a junk yard and get a used one for 2 bucks they last as long as a new one usually does,good luck with it,i hope this help,s.

Answer 2

Since you don't mention what kind of car you have or any other useful information...

...there's usually a little resistor pack somewhere (possibly near the blower motor) that is most likely the culprit. It'll have like 5 big, heavy different colored wires going into it. This is, of course, if you have one of those (some vehicles use a different system to alter the blower motor's current and/or voltage).

Answer 3

I had the same problem in a '98 Honda Accord. It was the fan switch.

Answer 4

It could be the fan switch or that you need a new filter or also that because it's an american car, it was bound to happen sometime.

Answer 5

check your fuses. or it could be your fan belt in the small motor that blows.