2003 Ford Focus owners?

[Proud Momma]

I have a 2003 Ford Focus. It's in really good shape. It runs great or at least up until about a month ago when the temperatures started getting really hot here, sometimes in excess of 100 degrees. My car seems to run just fine when it's cooler, but in the heat of the day it won't start. It will turn over, having battery power, and all that comes on but won't actually start. Has anyone else had this happen to them? If so any explanations of what might be the problem? Thanks in advance.

 

[007]

My wife had the same thing happen to her when she drove my focus...it was hot, and she had the air on..it stalled and wouldn't start till it colled down. I think it could have been some cheap gas and it vaper-locked. I haven't had the problem yet, so I can't say much more.