Electra Park Avenue V6-231 3.8L VIN 3 FI (1988)
Air Door Actuator / Motor: Initial Inspection and Diagnostic Overview
Troubleshooting Hints
NOTE: If air flow does not come from the proper outlets under one or more operating modes, at least one of the air valves is not moving to the proper
position.
1. Check for manifold vacuum to the A/C Control Head at the VIOLET hose from the vacuum source.
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If vacuum is not present, check the hose back to the engine vacuum source.
2. Check the operation of the Temperature Valve by moving the Temperature Selector rapidly back and forth several times. Listen for the valve to
strike the stop at each end of its travel. If the sound indicates that the valve is not fully closing or opening, check the mechanical linkage between
the valve and the Temperature Selector.
