What could be wrong with my air conditioner? I have a 2002 Ford Explorer that has 66k miles. The fan on the air conditioner is hardly blowing. It does not change when the speed dial is adjusted - including max air. It seems to be blowing slightly more at the round vents at the top of the dash.
It sounds like a blower motor problem. It may just be that you need a new relay since it*s only blowing on low.
This should not be very costly if that is the problem.
Also if the knob is a dial, pull it off and make sure that it is not cracked and spinning on the post. In that case it may be that you just need a new knob. If you can turn the post with a pair of pliers and everything works...it is the knob.
This will not be the case if you are pushing buttons however.
〉 Answered on Jul 6th, 2009 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines