2001 Volvo V70 XC Q&A
2001 Volvo V70 XC Question: What would cause the engine to run rough and misfire on start up?
The turbo charger vacuum control is too low; Check for vacuum leaks from the intake manifold to the turbo control. If vacuum leaks are not noticed, could be in the turbo control its self. My opinion from what information you gave is, there is a vacuum leak. On start up the engine is trying to compensate for the leak and stumbles until it corrects for it. - ProfessorG