Thanks for that. I now have a good CO meter on its way so hopefully that will establish for sure if CO is culprit. Certainly I'm reacting to SOMETHING and VERY severely too... By the way, the reason I emphasized that open windows don't aggravate the problem is that I've actually experienced this pro...

Hi there! Well I've very recently purchased what seemed to be an immaculate 850 estate (94 2.0L 20v). Unfortunately it appears to have a serious problem. After driving it a few hours I realised I was experiencing all the classic symptoms of carbon monoxide poisoning. I put one of those carbon monoxi...