will run perfectly until the temperature is warm then it shuts down?

Start by checking fuel pressure with a fuel pressure gauge not the thumb or the eyeball method and comeback with the readings.

I have seen the multi post control relay get hot and fail on these cars, but please check the temperature of the ignition switch, if it is warm it is bad and needs replacement. Here is the location of the MFI relay so you can check it out. Check out the images (below). Let us know how it goes