Operation CHARM: Car repair manuals for everyone.
Home >> Volvo >> 2003 >> C70 L5-2.4L Turbo VIN 63 B5244T7 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Variable Valve Timing Solenoid >> Service and Repair
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Variable Valve Timing Solenoid: Service and Repair






VVT solenoid, inspection and cleaning

Inspection




Remove VVT solenoid from camshaft cover.
Blow through center hole with compressed air.
Air should emerge from inner hole (1) nearest coil.





Connect power to solenoid. Solenoid should click.
Blow through center hole with compressed air.
Air should emerge from outer hole (2).
If plunger is sticking or solenoid fails to operate electrically, the direction of flow will be unchanged from step 1.

VVT solenoid, cleaning




Remove solenoid from aluminum housing.






Remove:
- snap ring (1)
- washer (2), spring (3) and plunger (4).
Inspect and clean all parts.
Blow out aluminum housing.
Oil parts with engine oil.
Reassemble solenoid.
Check operation as described in operations 1 and 2.
Reinstall solenoid in car using new seal.

Testing
Erase diagnostic trouble codes.
Test-drive car.
Check that no new diagnostic trouble codes are displayed.
If new codes are displayed, continue troubleshooting as per VIDA.

pro multis · About Operation CHARM