Hello,
I am out of ideas and need some expert advice. Recently my 2003 volvo had a bad turbo . The car was sluggish with high pitch noise coming from turbo during 0 to 20 mph. My bluetooth OBD2 reader read only vacuum and would not go over to boost. After doing the following I still have by reader reading vacuum plus the car is still a little sluggish and I don't get the kick from the turbo. The old turbo was leaking oil into the intake side and I had to clean the sensor connecting to PCV hose on the intake hose.

1) Replaced turbo with another used housing, wastegate and bov. I bought a new CHRA and rebuild a second turbo to replace the one from my car.

2) Replaced the 3 vacuum lines going to wastegate, bov and intake hose.

3) Changed the oil, oil filter and refill the coolant.

I don't know what else could possibly be causing the turbo not to kick and need someone advice as to what could be the problem. I got it to read 2psi after multiple attempts and flooring it. Thank you in advance for your help.

 

Anyone?

 

Boost Control Solenoid?

(BCS) Boost Control Solenoid GENUINE VOLVO 115605 9473212

 

That is exactly what the problem was. I replaced it today and I am happy to report that the Boost is working. Thanks for your reply

 

Yay! Thanks for the answer. Many people ask but never return to tell us the solution. It's always nice to hear how the issue was resolved.