Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
Hi, Im Brandon. Is the check engine light on?
You should put a bottle of Techron fuel injection cleaner in the fuel tank. It will help clean the injector and it will help the rough idle.
Did you receive a p0420 code? If yes that means the catalytic converter is bad and that will affect the engine performance. Please let me know the code?