Genuine 2003 Volvo S40 Turbocharger

2003 Volvo S40 Turbocharger Parts and Q&A

• Q: How should you inspect a turbocharger for damage and what steps should be taken if issues are found on 2003 Volvo S40?

  A: With the turbocharger removed, inspect the housing for cracks or other visible damage. Spin the turbine or the compressor wheel to verify that the shaft is intact and to feel for excessive shake or roughness; some play is normal since in use the shaft is 'floating' on a film of oil. Check that the wheel vanes are undamaged. The wastegate and actuator are integral with the turbocharger and cannot be checked or renewed separately, so consult a Volvo dealer or other specialist if it is thought that the wastegate may be faulty. If the exhaust or induction passages are oil contaminated, the turbo shaft oil seals have probably failed, and on the induction side, this will also have contaminated the intercooler, which should be flushed with a suitable solvent if necessary. No DIY repair of the turbo is possible, and a new unit may be available on an exchange basis.