lbarnaby
New member
Just replaced water pump, Opti-Spark, plugs & wires. Now Auto AC blows air to windshield & floor at start-up. 10 miles later, air gradually shifts from windshield/floor to "face" outlets. About another 10 miles, air blows only to "face" outlets and no longer to windshield/floor. What could have happened during the replacement work? I checked the exterior temp resistor and it was OK but I still replaced it but the condition remains. Any experience with this before I start ripping the HVAC programmer apart?