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Old 06-30-2003, 12:48 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,115
The ACC system won't hold a vacuum for very long when the engine's off. There's a reservoir, but it's more to tide the sytem over during driving transitions, I think.

There's a little filter about 3-4 inches up along the small line at the vacuum pump. The ACC system will act strangely if the filter is clogged. I don't know if it can be cleaned but it's easy to replace or remove for testing. If that doesn't do it, then I'm pretty sure it's bad actuators in the ACC system.

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