Intake Manifold Runner Control Circuit Low (Bank 2)
Common Symptoms
- Check engine light illuminated
- Reduced engine power or hesitation during acceleration
- Poor fuel economy
- Rough idle or engine stumbling
- Lack of low-end or mid-range torque
Most Likely Root Causes
- Faulty intake manifold runner control valve or actuator
- Damaged or corroded wiring harness to runner control valve
- Stuck or binding intake manifold runner flaps
- Failed intake manifold runner control solenoid
- Vacuum leak at manifold runner control system
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Component Location
The intake manifold runner control valve is mounted on the intake manifold, typically on the bank 2 side of V-type engines.
Manufacturer Notes
Some manufacturers use vacuum-operated systems while others use electric motor actuators for intake manifold runner control on bank 2.
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