When using AC, fan speed seems same for low and medium while blowing nice and strong. Do I need newcontrol? ECU? or...?
How do I diagnose problem? I was leaning towards replacing AC control unit thinking it is the fan speed switch.
Thanls

 

Do the fans go to high speed when you select defrost? Pull the fuses out for the fans and make sure they are both working. Prolly nothing wrong with the control panel.

 

Yes fan works on high speed on Defrost. ?
Works AC low, Medium is same speed as low.