Celica :: 2003 Toyota Stalls When Outside Temp Is 90 Or Above

2003 Toyota Celica GT-5 speed. I live in South Florida and last summer, when the temp got above 90 and the car was driven for about an hour and half, it would act as if it were out of gas. After pulling over and waiting for about and hour, the car would start up and run fine for about another hour, and then the same thing-stalled. I had fuel filter cleaned, injectors cleaned, did not work. Next mechanic- said the gas cap was bad, replaced it-3 times! Did not work. 3rd Mechanic- Replace coil packs. That was in September. The car ran fine. Drove it to Denver, Pennsylvania-twice and various other road trips. Ran like a champ. Thought, great, its fixed. Didn't think much about it again until two weeks ago.

Was driving to PA and the temp spiked 90 in Virginia and here we go again. 4th Mechanic- replaced the catalytic converter $1,000.00 Assured me 100% that was the problem. Picked it up earlier this week. Drove from Virginia to Jacksonville- 8 hours, no problem until it got hot out and again it began to sputter. I nursed it to the side of the road, sat until dark and drove it 6 hours home in the dark at 80 mph and no problem. It's only when it's hot out and I'm driving further than an hour. I just dropped it off at Mechanic 5. I don't want to replace more parts and continue to have the same problem. Codes read gas cap problem?!?!?