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03 s55 high rev and no throttle

8579 Views 15 Replies 5 Participants Last post by  OC55
Just bough another s55. I am having some issues with the throttle and high rev. when I start the car it will idle high in park and neutral. then it will just go to limp mode with no throttle. I am in Orange county Ca ..there was a guy sseric who seemed to know alot about it..he works for MB just hoping someone can give me some good advice. gonna replace plugs this weekend.

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just glanced thru......... are we talking "throttle valve" or "throttle body"... is it a transmission or engine issue....... I see both mentioned, are both at issue here?
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