Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
HiCustomer This should help to identify for you. May be a dealer item only. Any false air into the intake will cause a driveability problem.
Replace obvious failed hoses. You did not mention any check engine light on? Then we need the codes. I would also try disconnecting the mass air flow sensor connector. They do fail intermittently.
How long and when did this happen,
Does it do it hot, cold,
Did it overheat or loss of oil ?
Just a note with your sympton the following systems will need to be checked.:
1 - engine compression
2 - fuel pressure
3- ign timing
4 - pull codes from computer
You may need a repair shop to quickly find the problem unless he has the tools and skills to go above the visual inspection.