Will do.

The most likely culprit is the vacuum shutoff actuator, 2nd most likely is improperly serviced seal on the shaft. If the shaft seal is installed properly with the snap-ring and spacer then you will most likely need to un-install the shutoff actuator to determine whether it binds without, I replaced this recently in my '93 and IIRC I couldn't do it without removal of the intake to get the ALDA off.

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Gone to the dark side

- Jeff