the a/c is designed to come on wth defrost. don't know what year they started. could be since the beginning of a/c. i don't know. but my 72 olds came on. but that's a car.
check for power at the low pressure switch. if you got power, stick a paper clip in the plug and see if it sends power to the compressor. if it does then you've got a bad low pressure switch.
do the same thing for the high pressure switch also.
if you got no power, then it could be a relay problem or maybe ecm. in which case you'll be better off having a shop look at it.
Ac Cluch not engaging
Discussion in 'Volvo Forum' started by 1source, Jul 18, 2014.
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