Grinding Sound When AC Air Conditioning is OFF
Apologies in advance if this has already been covered somewhere - I've had a good look but can't find anything that seems to cover it.
I purchased a 2006 S80 SE 2.4 D5 about a week ago and have been extremely happy with it until this morning.
There's now a loud grinding noise coming from under the bonnet whenever I turn the AC OFF. When I turn the AC on the grinding dies away after a few seconds. When I turn the AC off, the grinding sound starts and continues until I turn off the AC or the engine. The sound seems to change in pitch when I go faster.
The only thing I can recall doing differently this morning is turning the temperature onto HI and the fans on full as it was very cold. The AC was on during the journey - then when I turned the engine off (which obviously turns the AC off) the grinding noise happened for the first time for a few seconds. When I turned on the engine the grinding happened for a few seconds and died off (as the AC was turning on) - then I noticed the grinding noise stays on continously when I leave the AC off.
Does anybody know what this is? Something to do with the compressor maybe? - I've read the compressor may be £500+ to replace.
Last edited by Thundamentalist; 03-31-2010 at 03:35 PM.