Hi All. I've got an intermittent issue where the car won't start sometimes when it's hot, say after getting gas or a quick stop at the grocery store. If I let it sit for a 30-60 minutes, the car cools enough to start and run. I replaced the 614 relay as some google searches suggested, but it didn't fix the problem. Other suggestions I read are to replace all the relays (614 and 395) and to replace the coolant temp sensor. What should I try first? Any other things I should try?

Car has 115K miles and I'm likely going to replace it soon, so trying not to throw money at it. Thanks in advance.