Question about 2004 Toyota Corolla
When the a/c is turned on a whistling sound comes from the ducts
The whistling could be an indication of lack of air flow which will cause the evap coil to frost. The frosting could also be an indication of low refrigerant. As a quick & dirty test, here's something to try. After the system has been off long enough for the coil to completely thaw, set the thermostat for "fan on" & open the door to the air handler (or furnace). If you have to pull hard to get it off & air rushes in thru the door opening, you probably have a return air problem.
Read more: http://www.doityourself.com/forum/air-conditioning-cooling-systems/219207-whistling-noise.html#ixzz2xZOyZr5b
Posted on Mar 31, 2014
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 19, 2013 | 2002 Nissan Xterra
Aug 14, 2012 | Cars & Trucks
Feb 21, 2011 | GMC Jimmy Cars & Trucks
Aug 05, 2010 | 1999 GMC Safari
Jun 09, 2010 | 2005 Chevrolet Tahoe
Dec 31, 2009 | 2001 Toyota Camry
Mar 22, 2009 | GMC Envoy XL Cars & Trucks
Mar 20, 2009 | 2005 Chevrolet Equinox
137 people viewed this question
Usually answered in minutes!