I've got no air coming out of the dash vents in 1990 Tempo. Nomatter what buttons I push I can only get air from defrost and floor vents. Any ideas?
Anyone got a diagram or schematic of this system? i don't have a clue as to what to look for..You probably have a vaccuum leak. There is a small plastic hose that supplies vaccuum to the climate control. I think it passes through the firewall around the heater core fittings. Check that it's not broken or loose.
If that's OK, it's probably something under the dash. Your climate control unit could be shot(not likely) or the blend door actuator on the heater box could be broke or stuck. It's a little vaccuum solenoid that moves the blend door to direct air to the vents, defroster or floor. I think it's visible from the passenger side under the dash.