I drove car 1hr. on interstate.car started hesitating as if running out of gas.engine stopped.Would not start.I waited 20 minutes and then car started.it ran good for 10 minutes.car died again.I waited 20 minutes again, and like the first time car ran fine.Through this whole time the temperature outside was 98 degrees Farenheit.Coming home in the cool night car had no trouble.Before and after this,car has trouble starting only in the heat and does not die in local driving. in cold weather,it's just fine.