XC90 L5-2.5L Turbo VIN 59 B5254T2 (2004)
Variable Valve Timing Solenoid: Customer Interest
Engine - Knock/Rattles/Low Power/DTC's Set
S60/S80/C70/V70 (01-)/V70XC (01-)/XC70/XC90
Vehicles involved: Gasoline engines 2002- with Bosch engine management systems.
VVT solenoid, cleaning
This service bulletin describes a possible reason for one or more of the following symptoms
Diagnostic trouble codes 640A, 641A, 643A, 644A, 640F, 641F
Engines appears to lack acceleration power
Knocking and rattling from engine
These symptoms may be caused by sticking of the VVT solenoid plunger due to impurities (metal filings ) left by the manufacturing process. If these
symptoms are present, the VVT solenoid must be inspected and cleaned as described below. This procedure does not apply to cars equipped with Denso
engine management systems, engine code 61 and 64.
Transmission VVT solenoid, inspection and cleaning
Remove VVT solenoid from camshaft cover.
Blow through center hole with compressed air.
Air should emerge from inner hole (1) nearest coil.