JoshuaBLESS YOU SIR!I don't have a clue as to why or how but Ctrl-F4 did something for sure. I tried it at TEB , APA and Meigs in the Arrow, the Mooney and the default Cessna and I AM BACK IN BUSINESS! I can once again reach redline! Thanks for all the help folks.I'll say it again, it may be all we have but at times MS Flight Simulator can sure get tedious.Thanks again.Walt in CO

Glad I could help.Joshua

All the Lockheed Constellation models stall if left idling too long. It mirrors quite well the difficulties of large piston engine management.vololiberista

Ah ok, stall as in "shutting itself off". I was meaning stall as in loud bangs and virtual loss of thrust. Interesting fact indeed.