Blower Speed Regulation

[Guest atr]

Hi

In my car - 2 Lit. 2001 - the blower motor runs only at full speed. I would like to ask if the speed regulatio is done with resistors or is it an electronic circuit and where are they located in the car?

Thanx.

[skysurfer]

Hi atr

 

 

The blower speed regulator is inside the blower assembly right next to the blower motor.

This is located just where you would expect from the noise it is making at full speed! That is, it's above the passenger's feet. Remove the furry cover and then 3 crosshead screws remove the motor & speed controller. (To the left of the pollen filter).

I assume you have the speed selector which has an "Auto" setting. In which case the speed regulator will have 2 large transistors and a relay. (No power resistors). In your case it sounds like the relay is allowing you to get the full speed setting and the knackered transistors are preventing you from getting any other speeds.

See my rather extensive reply in the "Heater Fan Is Intermitent" thread for further info.

 

Alan