A/C layout?

[AzDon]

Originally Posted by Riveted1

Had a couple of days with the AC. Outside temps have been around 90 degrees, which we know is nothing around here. Blows nice and cold when I'm driving, and it actually gets chilly when I'm cruising at highway speeds. BUT any kind of stop and go (which is the majority of my driving), and it just doesn't cool well.

Any ideas?

The sanden compressor is designed to work best at high rpm and not so well in slow traffic. It also is designed for relatively small systems (think Jap cars!) On the upside, it doesn't have a big HP requirement.
Changing back to an A6 compressor would probably improved low RPM performance considerably, but it's important that your condensor capacity and airflow are up to the job, as well!
Here's something cheap to try... Eliminate your fan clutch with a solid spacer.
Your truck will sound like there's an airplane under the hood, but it will move some air across the condensor!