04 Explorer Ac Passenger Vents Not Blowing Enough

[NABRIL]

2004 Explorer that has A/c issue. The dash vents blow very little air regardless of the fan speed selected. We have to set it on 3 or 4 in order to feel the equivalent of a 1 or 2 in other cars.

When the a/c is set on normal vent, the defrost vents blow a little bit of air out.
I am not sure if that is supposed to happen, but it does. Unfortunately out of warranty, so I gotta try to resolve this myself.

Any thoughts/suggestions?

Thanks,
N

 

[NABRIL]

I tried the steps mentioned in this thread
http://www.explorerforum.com/forums/showthread.php?t=162232

but I could not find the 4 inch black ball behind the right or left wheel wells.

Any other suggestions for the location?

N