Help. 2000 Cherokee. Aircon does not work when dial is on 1, 2 or 3 but works on 4.

Any input why and how to fix this?

 

You are talking about the fan right?

 

Thats the blower motor resistor. Just replaced mine probably in about 20 mins.

 

Where is it?

 

White ceramic block on the blower housing just under the passenger side dash. Might be behind a little piece of metal to protect it. You will see the wires going to it.

 

Thanks for the responses. Just to clarify, there is not blower at 1, 2 and 3. But the blower goes full blast at 4. Both for cooling and heating.

I want to do it personally but I am inexperience. Willing to learn to do it. I hope I am not being foolish Does anybody have a link to show what I need to do? Thanks!

 

its the resistor. it is bypassed when running on 4 because it is not needed to resist the current to slow the motor down. replace it and be done with it. good luck man.