the car is jerking at low speed and idle.

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Jan 7, 2012
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Location
malaysia
Your Mercedes
W211/2004/kompressor
W211 E200 Kompressor year 2004

guys, i have problem with my w211 E200 Kompressor...the car is jerking at low speed and idle...it will go once the default is erased by computer...i have changed most of the related sensors w the new ones including throttle body, air mass intake, radiator...but sometimes d car still jerk when engine started...recently, i hv sent d car to a service centre for a new spare key (keyless push start)...that is where all the jerking started...i sought an opinion from a third party mechanic n he believe that the ECU had been opened coz the same faults will appear even after all the related sensors, throttle body n air mass had been replaced w new ones...so my questions are:

1) is it true it has something to do w ECU?
2) is there a need to change the current ECU?
3) if yes, where to but ecu in malaysia and how much?

many thanks
 
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