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Air leaking through vents

Well after pulling the all vents off and checking all the vents except the blend door all are opening and closing as they should. So I started prepping to pull the air box off the firewall I noticed some cracking in the seal around the outside box. So I duct taped the seam and went for a drive...
- JD89Suburban
- Post #20
- Dec 16, 2017
- Forum: Heat & AC
Air leaking through vents

On mine the door in the passenger kick panel opens for the recirculation on max a/c and there is a door under the wiper cowl that closes for the a/c but is open on all other settings. Would the air becoming through the cowl?
- JD89Suburban
- Post #12
- Dec 15, 2017
- Forum: Heat & AC
Air leaking through vents

Guess I will be tearing apart the dash this weekend and looking into the vent door.
- JD89Suburban
- Post #10
- Dec 15, 2017
- Forum: Heat & AC
Air leaking through vents

Yes it is doing it when everything is off but only when I am moving at highway speed.
- JD89Suburban
- Post #6
- Dec 15, 2017
- Forum: Heat & AC
Air leaking through vents

I have a 1989 Suburban with a 5.7 with a/c. When driving down the road I can feel air blowing through the vents even though everything is off. When I am stopped there is no air flow. I can switch it from hot and cold and the air temp coming through will change but the fan isn't running. Where...
- JD89Suburban
- Thread
- Dec 15, 2017
- Replies: 24
- Forum: Heat & AC