need A/C vacuum diagram

John H III · Oct 29, 2007

My 99 blows out of the vents while at idle or stopped but when under load it starts to blow out of defrost vents. I know its a vacuum leak but don't know if behind dash or somwhere under hood. only thing that has changed is transmission was rebuilt a week ago,before that it was fine. Any suggestions

Wicked_Sludge · Oct 30, 2007

sounds like the infamous "blend door" issue. search around a little, lots of info on the subject...

John H III · Oct 31, 2007

Fixed

The vacuum actuator for the front hub was leaking,bypassed it & a/c works fine. Already locked the hubs so don't need tha vacuum anyway

maskale · Oct 31, 2007

where is the actuator, I am having the same problem. what exactly did you do?

John H III · Nov 1, 2007

on passanger side.down around coolant reservoir,my vacuum hubs went to it. to bypass it get some vacuum T's and bypass

need A/C vacuum diagram

John H III

10+ Year Member

Wicked_Sludge

15+ Year Member

John H III

10+ Year Member

maskale

10+ Year Member

John H III

10+ Year Member

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