Kia Optima: RCV Control Solenoid Valve. Description and OperationWhen the throttle is closed, while the engine is running at cruise rpm (tip-out), the turbocharger boost pressure raises rapidly. The pressure wave strikes a compressor blades causing a knocking noise. To prevent this the ECM opens the recirculation valve which allows excessive boost pressure to vent back to the air cleaner side of the turbocharger compressor.

Adjustment
RCV Control Solenoid Valve. SpecificationsRCV Control Solenoid Valve. Specifications
Specification
Item
Specification
Coil Resistance (Ω)
28.3 ~ 31.1 [20°C(68°F)]
...
Installation
Room Lamp
1.
Reconnect the connector.
2.
Install the room lamp assembly.
3.
Install the lens.
Vanity Lamp
1.
Reconnect the vanity lamp connector ...
Repair procedures
Adjustment
TCM Learning
When shift shock is occurred or parts related with the transaxle are replaced, TCM
learning should be performed.
In the following case, TCM learning is requir ...