Question about 2000 Mercedes-Benz M-Class

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Ml problem when i accelerate sometimes to overtake the engine does not pull like it should, have the feeling something is holding me on the same speed and other times it goes really fast .i found this strange.if u could please give me an explanation.someone tould me could be an air release valve

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This vehicle is a drive by wire system and the throttle has no cable to it. All of your engine inputs must be working properly for computers to properly control your throttle. You can turn off the e.s.p. system by pressing button in center dash. this eleviates your traction comptuter from the equation. It sounds like you need to have your mass airflow sensor cleaned(by a professional) or replaced along with airfilter and have adaptations reset. If vehicle has 75k or higher miles replace sparkplugs as well. It is a common problem don't spend alot of money diagnosing just have the sensor replaced.

Posted on Jul 27, 2009

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