cowl seam, not dead vent, was my stereo's death. Also it gave my hazard switch trouble. Easy fix because it is pretty stable there.
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Idk that your vent is welded shut. Maybe that’s a seam where it’s tacked? If that’s welded, it was tacked, then the whole thing painted over. But the surface rust doesn’t show that? It’d be tough to get 4 nice, clean tacks in that vent cavity.It’s for looks only, welded shut with 4 tack welds.One vent was clear, the other blocked completely took a while to clear it. View attachment 3200991
I know in my 74 it is non-functional and was welded shut at the factory. It still has to drain, however, and those hoses. Expensive as hell. Here's my solution.Idk that your vent is welded shut. Maybe that’s a seam where it’s tacked? If that’s welded, it was tacked, then the whole thing painted over. But the surface rust doesn’t show that? It’d be tough to get 4 nice, clean tacks in that vent cavity.
Is your heater in place? Look up under the dash to see the mechanism for the cowl vent, guessing it’s just stiff and not actually welded?
Mine is the same as you describe: pull knob to close airflow. Mine was also so poorly adjusted there was a big gap on one side with the other side tight. Makes for cold winter drives. (Fixed now).It took a little doing to free up the mechanism so that the vent now operates. But, for some reason that I have yet to figure out, the vent is open when the knob is pushed in and closed when the knob is pulled out. This is opposite of the description in the Owner's Manual.
https://youtube.com/shorts/hkI8AnDk4WM? (Outside)
https://youtube.com/shorts/szK2AYAUOVE? (Inside)
View attachment 3206419