Before anyone says "check the vacuum hose that runs across the firewall", I have. That was the first thing I checked. The situation is this, I turn the control knob to floor, vent, mix and all is rose petals and love. I turn it to vent or AC and it does come out, but weakly. Most of it is diverted to the floor. I'd hate to tear the dash out for this. Any ideas?
TIA
Jim
TIA
Jim