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Lack of Power / Multiple Codes

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Old Apr 2, 2022 | 02:19 AM
  #1  
HelloFriends's Avatar
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2014 C63 Amg
Lack of Power / Multiple Codes

Recently Purchased a 2014 C63 Amg coupe with 106,000 miles.

The car has a huge lack of power. It sounds aggressive but acceleration is not there, more similar to a regular c300. When I first purchased the vehicle it had an engine light but everything seemed fine. I drove it home and at highway speeds the engine light started to flash and the high rpms felt like the engine was shaking all over the place. I pulled over, let it cool down and had no issues besides the sluggish power driving back.

Anyways codes:
P0300
P228f
P0306
P2187
P0171

​​​​Current solutions i am thinking:
Replace all 4 O2 sensors
​​​​​Replace all spark plugsReplace intake manifold gasketReplace crankcase vent valveReplace purge valveLiqui Moly lifter
Oil changeFilter changeLiqui Moly Cerakote & anti friction treatment Does this list seem reasonable or am I doing to much/little?
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Old Apr 2, 2022 | 06:08 AM
  #2  
'1663s's Avatar
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C63s
I really can't help with advice but the boys in the w204 forum might be able to. Try reposting there, this is the w205 section for 2015+.
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Old Apr 2, 2022 | 01:00 PM
  #3  
domjansson's Avatar
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Joined: Feb 2022
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C63 amg edition 1
Originally Posted by HelloFriends
Recently Purchased a 2014 C63 Amg coupe with 106,000 miles.

The car has a huge lack of power. It sounds aggressive but acceleration is not there, more similar to a regular c300. When I first purchased the vehicle it had an engine light but everything seemed fine. I drove it home and at highway speeds the engine light started to flash and the high rpms felt like the engine was shaking all over the place. I pulled over, let it cool down and had no issues besides the sluggish power driving back.

Anyways codes:
P0300
P228f
P0306
P2187
P0171

​​​​Current solutions i am thinking:
Replace all 4 O2 sensors
​​​​​Replace all spark plugsReplace intake manifold gasketReplace crankcase vent valveReplace purge valveLiqui Moly lifter
Oil changeFilter changeLiqui Moly Cerakote & anti friction treatment Does this list seem reasonable or am I doing to much/little?
you are throwing lean codes and misfires in multiple cyl. I would figure out your fuel system issue and do not push the car hard as you risk your engine. Start by checking fuel rail pressure. You may have a failing fuel pump. Spark plugs never hurt if you haven’t changed them in a while. You are running lean and misfiring. That Is not safe.
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Old Apr 2, 2022 | 01:41 PM
  #4  
tobeit's Avatar
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Joined: Dec 2019
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AMG C63s
Originally Posted by '1663s
I really can't help with advice but the boys in the w204 forum might be able to. Try reposting there, this is the w205 section for 2015+.
+ 1
…and you bought a car with CEL on and hoped for the best?

“ When I first purchased the vehicle it had an engine light but everything seemed fine”
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Old Apr 2, 2022 | 02:52 PM
  #5  
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2018 C63s
*****Sounds like a great way to blow up an engine. Never run an engine hard with a CEL code on, especially lean codes. You can have a really bad and very expensive day doing so.
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