It does idle slightly above the 500 mark. But, fuel filter, where? The X5 did sit for a period of about 5 months last spring/summer in garage. Vanos seals, will they be making a noise? When you say coils "go bad" what does that mean?
OHM reading check? I will change the plugs even though it's been about 20K miles. What do I clean the MAF AND THE ICV WITH? CARB cleaner? Brake cleaner? About three weeks ago I replaced the rubber intake/throttle body boot and noticed my ICV was solid, no noise when shaken. Looked fairly clean.
Vanos seal job difficult? Where do you like to buy your parts?
Thanks again.
Jeff

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X5 3.0 AUTO -2001 - 238,000 miles