Starting sequence-If I hesitate for 1 second, everything is OK

What is your question?

2001 Volvo S80 2.9 If I turn the ignition key to start normally, the engine rpm shoots to 3000 and and stumbles it way down to normal in a few seconds-(there are also sounds that could be backfiring?). If I hesitate in ignition "position 3" for just a second, the vehicle start just as it should. If I start the engine in the normal manner (with accompanying drama) and shut it down, the next attempt at at starting it in the normal matter is usually is successful. No engine light. Scanning indicates no error codes. The only other possible clue that I can think of is that this situation started in late fall (Minnesota). Any assistance would be greatly appreciated. Thanks

What makes this problem better or worse?

A restart is usually successsful

How long has your 2001 Volvo S80 had this problem?

3 months