Vacuum line for heater blend
 

Hello again,

I know I've been throwing down alot of questions lately.I've managed to do 1 build with minimal questions and am almost complete my second build. One thing I noticed about the first swap that I want to correct with the second swap is being able to use defog.

I dont notice it much on my 1st one, because I use an internal heater in the cab while it is parked overnight. So its always defogged and warm inside for me when I jump in. However with two trucks it would be a major draw on the houses power.

I know that the blender lever for moving the heat from the floor to defog is vacuum controlled.. and I would like to know what you guys used as a vacuum source to drive that heater mixing valve. It would be nice to have that working and save a bit on the power bill.


Also, as a second question.. I'm still waiting for my second harness back and ECM..I sent it to current performance. anyone know what to expect from them when I get it back? quality?

Once again thanks for your time guys.. you know.. its winter and all.. gotta keep your fellow members warm ;)

Re: Vacuum line for heater blend
 

Are you guys telling me that, after the swap your defrost has been working properly? As far as I knew the valve needed some help from a little vacumm.. Anyone able to chime in?

Re: Vacuum line for heater blend
 

Are you wanting to know where to get a vacuum source to run the HVAC blend doors? If you have a truck intake, on the passenger side about the middle is a fitting that usually has a break off tab on it. break the little tab off and a hose will push on and has little pieces on top and bottom that hold the hose tightly in place. If you have a car intake, it's at the back of the intake by the brake booster fitting.

Re: Vacuum line for heater blend
 

That was one of the neatest tricks you folks told me about, works great, thanks !!!!

Re: Vacuum line for heater blend
 

Works like a champ thank you. Saved me from putting in a electrically operated blender valve from a dodge Caravan in there.