Come to find out after reading the link about the s60 with the same problem I broke down and spent the 47.50 and bought the turbo control valve. It installed in 5 mins flat and the problem is 100% gone. To anyone with a turbo volvo giving this issue, its well worth the 50 bucks to see if it goes ...

Hello, I have an 02 s80 t6. When I bought it it was still under the factory warrantee. I am a diesel mechanic and have a good understanding of forced induction. During the test drive I found under hard acceleration the car began to surge. It was smooth and timed. You could tell the computer was ...