89 Volvo 240 stalling


I have a 89 Volvo 240 wagon that acts strange when it’s extremely humid outside. The car fires up no problem first thing in the morning, I drive it to one destination, turn it off but when I go to start it again it will not idle. It just dies. I have to rev the engine and sometimes pop it into drive to get it going. And then it’s fine. Does not stall at stop signs, traffic lights or anywhere we come to a stop. But if I turn it off when the engine is hot, can’t get it to idle. I’ve tried replacing everything I could think of from fuel pump relay to airflow sensor, but I can’t seem to troubleshoot this one.

Any suggestions would be great.

Thanks for your help!