I'm looking for an expert diagnostician for my 1999 v70. The car hesitates intermittently and unpredictably, sometimes it stalls. Sounds like an ETM problem. Last year, about 15K miles back, it was happening a lot. The dealer in Summit refused to admit there was a problem. I changed the fuel filter and spark plugs, and the problem "went away" for 15K miles ... but now the car hesitates at normal speeds and I'm afraid the problem is back. I'd like a root cause diagnosis. My fear is that the Summit dealer only wants to be paid, but is remarkably incompetent.<p>I would be thankful for any suggestions.