so i'm having a venting problem i dont get anything out of my vents on the dash at all. it doesnt matter what venting optioin i put it on (a/c, heating, defrost, etc) it only comes out the floor vents and the defrost vents on top of the dash. so any imput would be helpful!

 

Common issue. Seems you've lost the vacuum source to the HVAC module in the dash. When no vacuum supply is present, the actuators go to their neutral state which happens to be floor & defrost.


*Moving to 1st Gen Tech*

You should get a better response in the mechanical & maintenance section. I'm not sure if I posted the vacuum routing for a 1st gen before, but I know I did for the 2nd gen non-auto hvac system. That might help... Typically this is caused by a faulty vacuum switch on the transfer case which can result in transfercase fluid being sucked into the HVAC system!! What a mess that is to clean up!

 

where is the vaccum hose that connects to the HVAC module?

 

It runs from the vacuum switch up through the firewall to the back of the HVAC switch.

 

thanks for all the help!! i got it fixed turned out that a hose was disconnected at the T and the hose to the back of the intake was also disconnected so i connected them both and VENTS WORK!! so thanks for all the help!!