The rattle

[rj71]

Hello. 1st posting. 2002 Boxster with 36k. Persistent engine rattle centered around the passenger rear side, loudest at the wheel well and vent. Noticeable at idle even after full day's drive. Clears once in gear and >2k. Otherwise, the car runs perfectly, no complaints, but annoyed (and a little concerned) with this rattle.

Dealership thought faulty water pump and replaced that, helped for a few weeks now just the same.

I see a lot of old postings about this kind of thing. Any concensus?

Thanks, rj71