Thanks for the tips. It has vac to the heater control valve. Yes, maybe more was damaged, but coolant level is steady. That thing with the fan coming on after five min running and not going off is just freaky!

My 940 came to me with a blown head gasket and warped head. Replaced the head and it runs fine, with a few aggravations, to wit: 1. AC won't turn off, unless I dissconnect the compressor. 2. No heat will flow. Dash defroster and floor vents work as usual. 3. After running for about ten minutes, the ...