You do not say how many miles on the clock. If it is high, say 100k, your compressor clutch may be worn so that the coil will not pull it in. First, when it fails to come in when you think it should, very carefully give the end of the clutch a tap with a long stick. If it clicks in, that could be your problem. With a bit of ingenuity it can be adjusted. See the following link to the end:
http://www.volvoclub.org.uk/dc/dcboard.php?az=show_topic&forum=14&topic_id=19712&mesg_id=19712&page=8
--
Graham
|