I have a 200o se auto, and occasionally I get a spark knock and poor acceleration. I've tried all different types of premium fuel and injector cleaners. I've also had the dealer reset my computer at 15,000 miles. Is this related to all the talk about solenoids and tsm?????

 

I never noticed until I was on a San Francisco style hill. With Super though I don't have any knock (5-speed). Did you try another dealer? Too bad you're over 12,000 miles but if you didn't try the dealer that sold you the car maybe they will adjust it for free.