95 mustang vac problem Ive been looking for a vac leak cause my ac will only blow out defrost

I checked lines under dash No vac long story short I found the line was broke at the vaccum block I fixxed it and have Vac all the way up to a splitter with a pig tail in it it has the numbers E4ZF-9C915-AA and E0995b there is Vac going in to it but none comeing out and the air still only blows out the defrost

Found out that part is a vapor canister purge siloniod does that even have anything to do with the AC

did pull the glove box there is a red yellow and blue line that goes into a plug that has a white line that goes into a thing thats on the firewall that white line has no vaccum

 

Check the blend door and the blend door actuator to see if they are functioning or damaged. A blend door actuator can go out pretty easily, although it's not too common.