03-Blue-Powerstroke
New member
Yesterday I added a can of R134A to my truck due to the 95* weather :doh:. Anyway, whenever I first turn it on, (max a/c setting) it makes a grinding/slipping noise. It only does it 2 or 3 times and then it stops. I also noticed the noise once during the winter when using the defrost. Is there any common problems or things I should look at? Once the air is on it works fine though in all of the settings. The truck also has a new serpentine belt if it matters. Thanks guys!