My 2000 Volvo S80 loses engine power until it warms up. on 2000 Volvo S80

The problem happens everytime the car's engine is cold. When the accelerater is pressed the car starts and stops then acts normal, until I stop and then start again.

Asked by for the 2000 Volvo S80
There are many possibilities...a proper diagnosis by a qualified technician is needed to troubleshoot the issue.