Hi. When I turn it on it seems to make a rather annoying and loud gurgling or whining sound. Sometimes it sounds like a pigeon is stuck in there! It also seems to pump air out at the complete wrong speed. Even if I have it on really low it will pump air out at maximum speed but the temparature appears to be correct. The noise appears to be coming from the top of the dash area. The noise and speed problems have become very frequent now, pretty much everytime I use the climate control. Any suggestings of the cause and how to repair would be much appreciated. Thanks in advance!