I've been having an issue I hope someone can help me diagnose. After driving for a while the car starts stuttering and eventually stalls. This happens only on very hot days or when idling for a long time. It appears to occur when the temperature under the hood gets very high but the car doesn't overheat. I've already replaced the main relay but thagt didn't help. I'm guessing it's either some kind of vapor lock or electronic issue but I don't know where to start. I'm very capable fixing mechanical issues but I'm rubbbish when it comes to fuel pressure issues or electronic gremlins.
Thabks in advance!
Thabks in advance!