I purchased a 2010 Ford F-150 with the 4.6L motor. The AC seems to work fine, but only when I am moving. When the truck is moving above 30 mph it produces a relatively cool stream of air even if the cabin interior is very hot.
Once I slow down, the AC becomes ineffective. While I'm sure the air is still cooler than the air going in, it barely has any temperature difference. Is this normal for this vehicle? It has a two electric engine fans which run whenever the AC is turned on. The condenser under the hood appears to be clean and free of damage or obstruction.
The previous F-150 I had used an engine driven fan which moved a huge volume of air. So much it would actually blow leaves and grass on the ground around. I am wondering if this newer vehicle just has less effective AC as a consequence of the electric engine fans.