Hi, my 2000 VW Beetle has been in the shop (not dealership) for three weeks off and on. Intermittent stall while driving (not decelerating). No codes thrown. Replaced starter harness and spark plugs. Still stalling. Shop wants to start installing and removing various sensors as elimination, but this can be/is going to be a costly proposition. Any suggestions on where to start? No shudder or indication before stall, just check engine/ABS/oilpressure/seatbelt lights on - brake pedal up - get to the shoulder as quick as I can. Filters, hoses -- all good. Thanks for any help!