Intake Manifold Runner Control Stuck Open (Bank 2)
Common Symptoms
- Check engine light illuminated
- Poor low-end torque or acceleration
- Rough idle or unstable engine operation
- Increased fuel consumption
- Hesitation during acceleration from stop
Most Likely Root Causes
- Failed or stuck intake manifold runner control valve
- Carbon buildup preventing valve movement
- Faulty intake manifold runner control solenoid
- Damaged or disconnected vacuum lines to actuator
- Broken linkage or actuator mechanism
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Component Location
The intake manifold runner control valve is located on the intake manifold, typically on the side corresponding to Bank 2 cylinders.
Manufacturer Notes
Some manufacturers have updated intake manifold runner control valve designs to address carbon buildup and mechanical failure issues.
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