C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

Sluggish Acceleration

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Old Mar 11, 2010 | 11:08 PM
  #1  
c3nthusiast's Avatar
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From: Fort Washington, MD
2008 C300
Sluggish Acceleration

For months my car has not responded very well. At 60 mph if I punch it the car will not react for about 3 seconds. I went to the dealer today and had an engine and tranny ECU update and WOW!!!!! It runs better than new!!!!!!!
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Old Mar 11, 2010 | 11:51 PM
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RLE
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From: SEATTLE WASHINGTON USA
'08 C300 Lux Barolo Red Beige Leather P2 MM 18" wheels '84 944
Originally Posted by c3nthusiast
For months my car has not responded very well. At 60 mph if I punch it the car will not react for about 3 seconds. I went to the dealer today and had an engine and tranny ECU update and WOW!!!!! It runs better than new!!!!!!!
And you waited months for what reason?
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Old Mar 12, 2010 | 08:20 AM
  #3  
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From: Fort Washington, MD
2008 C300
I don't normally floor the car. I figured over time the car would relearn but I was wrong.
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Old Mar 12, 2010 | 09:08 AM
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
Did the car respond normally in all situations other than full throttle? Was it more of an engine or transmission problem?
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Old Mar 12, 2010 | 09:42 AM
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W204 Color: 090 / 1999 Honda Civic EX / 2003 Acura TL
the dealer probably reset your ECU
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Old Mar 12, 2010 | 11:42 AM
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w204 c230
yeah ecu reset by the dealer is very likely.
see if the car feels any different 500km after it came back from the dealer. if it is then its definitely a reset.
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