onesickstang01

alright so my a/c only blows through defrost vents. from another post i read that its because a vacuum line off the tree. mine was plugged off so im tryin to figure out where exactly it is supposed to hook in. i know where it leave the tree so i need to find out where to connect from there. i have pulled up a diagram but it really didnt show much. any hints pics ect would help alot

mjr46

I have pics but post your prob in the form of a pic and show me what you have and I will direct you to the fix

hayden

i had a similar problem on my 93 one time, my heat and a/c would blow out of the defrost vents, but in my case it was just one of the little plastic vacuum lines, but from what i think you're saying, your tree has a plug in it so you dont have a hose coming from the tree to the little vacuum port(i guess you could call it, not sure what its called) on the firewall... look under the hood on the firewall, andto the right of theBAP sensor there isthe "vacuum port"where afew vaccum lines are connected. The far leftconnector on it should be labeled "S", and if your problem is in fact off of the tree, then there should be a hose going from the "S"connector to the biggestof the 3openings on your tree... wish i had pics to show you because i know this may be a little hard to understand, but its the best i can do without actually showing you... hope this helps

86 5.0L

here

hayden

that should make it a LOT more understandable

onesickstang01

yes 865.0 that is what im talking about.that peice on the firewall isfine. im the port marked A/C is plugged off and im wondering where that line is supposed to run.the original line is not anywhere to be found that i know of. where does it go from there? all the rest of my ports on the peice on the firewall are correct

86 5.0L

it runs from that tree across the firewall to a black round canister near the inlets for the heater core

mjr46

here try this the line runing across the firewall goes to vaccum tree.. the line looped on the check valve goes into the heater controls and the third line goes to the storage canister..in fenderwell..hope this helps
http://i242.photobucket.com/albums/f...r46/stangs.jpg

86 5.0L

ah yeah thats the thing

onesickstang01

yea that helps alot, i just dont remember seeing that on my firewall. ill go look in the morning though, hopefully i can get it fixed. i never use my a/c anyway so its not a huge deal to me it would just be nice to have it working if i needed it to. thanks guys, ill let you know if it works or if i have any other questions