[ngnate]

I have a 94' olds cutlass supreme that will start and run fine on any day that is 90 degrees F, or less. On days of that temperature or less, I can run it around all I want with very few problems, except if the engine gets over 150 degrees F. It still will run fine, but if I shut it off, it will start for about 10 seconds and die. I then have to wait for around 30 minutes before it will start again and stay running until I shut it off again. Then repeat the process.
At 90 degrees F and above it will ONLY start for about 10 seconds and then die. I can not get it started and keep it running at all at that atmospheric temperature.
Last year I had the fuel injector replaced, and it ran fine for a month, then it started doing this crap. My "so called" mechanic buddy said that it was the fuel pump that caused this problem. I have never heard of an in the tank fuel pump being regulated on its shitty operation by the under the hood temperature. I think it is the replaced injector, but not sure. Does anyone out there have any good theories or had the same problem? Thank you for reading this, and thank you even more if you have any advise.