2002 Explorer XLT A/C issue

hey all, i have an issue with the a/c on my explorer. the a/c blows cold but the vents in the dash keep closing then opening. the a/c is still cold because i can feel it at my feet when the split mode is selected so i don't think it is low on freon. it has me baffled, so before i tear into the blend motor......got any ideas. thanx......alex

Could have a vacuum leak at the motor or a bad check valve.

Does your Explorer have the manual (knob) HVAC controls or the electronic climate control?

-Rod

Thanx Dave....right on target. The vac line was cracked, took a little investigating and some carb cleaner to find, replaced the line and a/c is good. thanx

I am having this same issue with my 2002 explorer....my center vents won't open and it seems everything is going to the defrost section....A/C blows cold, etc.....I even have a parts 2002 explorer here that works wll and can't seem to track down my problem...went over the Vac lines 5 times...switched out the Vac bottle, etc....what am I missing ? Thanks for any help. Tom

Probably not a leak on a vacuum line. Could be the vacuum motor on the blend door is bad. You are getting defrost mode because something is wrong with the blend door. It goes to defrost by default whenever you have a problem with the HVAC for safety reasons.