thanks.. some more info: the timing of this problem coincides with the recent much higher temperature around here.

also, when i tried to start the car today after work, it took almost 3-4 seconds of cranking to fire her up.. started ok in the morning though.

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Current cars:
2001 MB E55 AMG
2003 Honda S2000
2000 Honda CRV

Gone but not forgotten:
2004 BMW 325i 5sp sport
1999 BMW 540i sport
1997 MB E420
1995 BMW M3 coupe