2005 Merc Grand Marquis w no a/c air flow from vents on front of dash
My '05 Grand Marquis has 140K miles. Recently the front a/c vents quit blowing cold
air. For the next 2 weeks we drove it with cold air coming out of the vents on top of
the dash only. After 2 weeks, a/c air flow on the top of the dash also quit. Yesterday I
R&R'd the blower motor. Now it's back to blowing cold air out of only the vents on top
of the dash again. I then checked the a/c system switch; which stays in the same
mode (normal a/c I think) in all positions except vent, and off. So "mix", normal a/c,
high a/c, "floor" etc positions all blow cold air out the top of the dash. Off is still off,
and vent is still vent. If anyone can suggest what part I should now replace or what
action I should take now, I'd appreciate it very much. Thanks. Les Tucson
