I have had this s80 for a few months now and having more and more problems. it wouldnt start a few months ago, and i cleaned the ETC and it has been running ok since then. Lately it has been stalling only whan i first start it, then I restart and its fine. the check engine light reads turbo control valve. I went to go to work this morning and it wouldnt start at all. I pulled the spark plug and reconected it to the coil and got no spark. Im not to sure where to go from here, Any help would be appriciated.