heater blows cold
October 31st, 2017, 7:07 AM
#1
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heater blows cold
have 93 g20 van conversion with front and rear a/c & heat.
heater blows cold until I remove vacuum line from main heater control vale. plug it back in and the valve arm actuates and lose hot air. I can't seem to find a diagram for my actual van , and right now I can't afford to take to a shop.
heater blows cold until I remove vacuum line from main heater control vale. plug it back in and the valve arm actuates and lose hot air. I can't seem to find a diagram for my actual van , and right now I can't afford to take to a shop.
January 17th, 2018, 4:57 PM
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Heater valve issue
Hey, have the same problem. Did you just leave the vacuum hose off? Did that work for ya?
Also, do you have rear heat? and did taking the vacuum hose off mess with the rear heat?
How did you get this situation solved, if ever...
Thanks!
I don't have the time to mess with a new valve...and it's damned cold out (-2) so I'm not willing to spend a couple hours outside.
Also, do you have rear heat? and did taking the vacuum hose off mess with the rear heat?
How did you get this situation solved, if ever...
Thanks!
I don't have the time to mess with a new valve...and it's damned cold out (-2) so I'm not willing to spend a couple hours outside.
January 17th, 2018, 5:14 PM
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It was a vacuum problem, but it was the control panel.
On the temp control there is a extra little vacuum line that wasn't actuating, in fact there is a little control with separate vacuum lines to it , and it just grenaded.
Had to go to wrecking yard to get new control panel, now it works great!
Hope this helps, good luck.
On the temp control there is a extra little vacuum line that wasn't actuating, in fact there is a little control with separate vacuum lines to it , and it just grenaded.
Had to go to wrecking yard to get new control panel, now it works great!
Hope this helps, good luck.
