Leslie,

Sorry to hear about your experience and thanks for the great info on the sensor. Not sure yet that it is the problem but now have a fuel pressure guage that will allow me to diagnose that important aspect of the FI system - I'm beginning to suspect the AMM had been fried because the cold stary flap in the air-box is in the open position which may mean that hot air running though the AMM killed it - though this is a common think accordign to the FAQ I'm not sure how volvo engineers expect that hot air warm up in cold weather to work on an AMM in cold weather - maybe all the temp. balance out...external and heated air etc..

I'll check out the knock sensor given your experience and post more after the fuel pressure test. Many thanks for the detailed response.