its me again please help

[garry62be]

520i 1993 taken glove box out,behind this is an air pipe conected to some sort of small fillter other end conected to heater but on fillter side it hisses on pass/side if i block air pipe with finger it blows over to drivers side.
when driving can always hear it hissing any ideas whats going on or am i all alone on this any reply would be helpfull
ta

[528iTdude]

You might want to try searching the culprit by looking at the parts catalog on realoem.com web site. Pretty easy to search for your car too. Good luck. JM>

[saltshaker185]

your description is tough to follow, pics would help alot...

thanks,

-werkz

[garry62be]

behind glove box after takeing it apart,small temp control sensor for inside car broken/faulty