New Air compressor issue?

Hey guys I know this has been posted a million times but I have tried to do everything and nothing has changed. I had zero issues with the old compressor but it was pushing oil so I wanted to swap it out l. 12.7l Detroit. Truflo 550 haldex reman from napa. Ever since I installed it purge valve will not activate while truck idles. Running down the road it will purge every 10-20 seconds. I tried a new governor. No change. I took apart and cleaned the entire air dryer, purge valve and swapped the air dryer cartridge. (AD9). NO CHANGE. Cleaned the check valve on the air tank. It was fine. No change. Pulled the unloaders out of the air compressor, checked them, cleaned them, oiled them. NO CHANGE. What the hell else could it be? It is my understanding that is basically it. These parts you buy now days are trash I'm really annoyed. Should have kept the one that was blowing oil. It aired up the truck perfect.