× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: AC system noise on compressor cycle
Posted to HVAC Forum on 6/5/2019

I've had expansion valves do that. Watch your pressures after shut down. If the buzz matches decay or rise of pressure you have found it. Very noticeable. Login to read more.