Review on 🔧 Motor Engine by Isaac Logan

I have a 2005 Ford Five Hundred with automatic dual air conditioning. Replaced this part due to uneven heating and cooling. I had hot air (150oF) out of the driver's side vents and cold air (55oF) out of the passenger side vents when the A/C was running at 75oF per day with the 71oF setting. This replacement unit, Motorcraft YH1865, is located under the driver's side dash. The old part number was 4F9H-19E616-EB. The part number on the new part was 6F93-19E616-BA and VP6F9H-19E616-BA. This change solved my problem. An 8mm socket was used to remove the three mounting screws. This part is not interchangeable with the unit that can be accessed through the glove box opening. This part number was 5F93-19E616-CA and VP5F9H-19E616-CA. I haven't been able to verify, but this unit could be a Motorcraft YH1866 HVAC recirculating door operator.