Thanks guys - I guess I will double check the vacuum lines again, the intermittent state of it is what really throws me for a loop but it can't hurt to eliminate one more variable.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth