oldsmobile Workshop Repair Guides

Oldsmobile Workshop Service and Repair Manuals

Intake Manifold Tuning Valve <--> [Variable Induction Control Valve]|Locations|Page 3908 > < Intake Manifold Tuning Valve <--> [Variable Induction Control Valve]|Locations|Page 3906
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LH Front Side Of Engine

PURPOSE

The tuning valve (rotary solenoid device) is electrically controlled by the PCM based on RPM and TP signal inputs, for accurate switching capability
at optimum switching points to enable either a "split" or "single" plenum condition

OPERATION

During the low and high end of the RPM range, the PCM de-energize 5 the valve and creates a "split" plenum condition that provides for peak torque
along with increased peak horsepower.
During the mid RPM range, the PCM energizes the valve, thus creating a "single" tuning plenum condition that provides for mid RPM range peak
torque.

CONSTRUCTION

The Intake Manifold Tuning assembly consists of:
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PCM

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Intake Manifold Tuning Valve Relay

-

Intake Manifold Tuning Valve Solenoid (Assembly)

-

Upper and Lower Intake Manifolds

Intake Manifold Tuning Valve <--> [Variable Induction Control Valve]|Locations|Page 3908 > < Intake Manifold Tuning Valve <--> [Variable Induction Control Valve]|Locations|Page 3906