still thinking about this problem.......when the engine is shutdown on the mountain, engine temps are warm, which leads the ecu to program less fuel for starts......then you go to a lower altitude and colder engine temps, but the ecu isn't quite as instantaneous as we might expect, it needs to be programming for more fuel, but it's still thinking warm engine, high altitude so it's programming less fuel, and engine won't start....on one of my suzuki engines i had a cutler switch, which would interrupt the engine temp sensor and allow the ecu to program for colder temps, like starting up at the start of the day....on the suzuki engine there was a yellow wire connection running down the top of the frame just inboard of the muffler and disconnecting it would do the same as the cutler switch, so disconnecting it would allow the injectors to put fuel into the engine as if it were cold (more fuel), and engine would usually start in 1 or 2 pulls, you don't want to do pull more than twice before reconnecting wire disconnect or you will flood engine....i notice the same yellow wire connection is on the alpha...i can't guarantee it does the same thing on the c-tec, but try it a couple of times, it could very well work and isn't going to hurt anything....anyway, good luck and let us know, others have the same problem :face-icon-small-hap