There is a single wire which goes to the clutch on your A/C Compressor, on
the lower front of your engine. The wire is connected to the clutch via a
temperature sensor which is strapped to the compressor. These often fail,
and Volvo omitted them completely on later models.
It is safe to link-out this sensor, as the high pressure sensor will cut out
the compressor when required anyway.
This is an easy fix, and will cost pence/cents !!
There is also an inline fuse on some cars, near to the temp sensor on the
back of the compressor. The fuse is in a crappy plastic in-line holder, and
normally held in a clip on the rear of the compressor. Check the fuse isn't
corroded. Your problem sounds exactly like the temperature sensor is
knackered though, so remove that from the circuit first.
It worked on my '97 V70, and I'm sure it will work on your 'ol beast.
Cheers.
Joe.
Peterborough
UK.
2000 V70 2.5D (old type engine).
Formerly 1997 V70 2.5D (upon which I came to trust this incredible engine by
completing almost 250,000 miles!
