Some advice is greatly needed. Last month, my 850 T5 developed an interesting fault.
The aircon started to blow 'unconditioned air' + at idle, the rpm started to sit anywhere between 950-1800. Turned aircon off - problem remained. Turned off climate control - rpm returned to normal. Turn off/on ingnition - aircon works fine + rpm normal. After a couple of minutes, compressor cuts out, warm unconditioned Air + high revs.
Had the aircon recharged, seals checked etc - fault still remains. Had the idle control valve cleaned - problem remains. Have trawled this forum, but nothing found that fits.
With the climate control turned off - rpm stabilises around the 1000 mark and sounds a little ropey. Have had the lamda light on for while and had it read - idle fuel trim?? Not sure if this is related.
I am convinced that there is a problem with the aircon somehow. Always when the compressor kicks in. Anyway, I am at a loss and so is my local garage.
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