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Engine issue, codes P2337, P2336, P2338

Tiny
WAIL MOHAMMED
  • MEMBER
  • 2010 MERCEDES BENZ E200
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 21,420 MILES
When I am in traffic or at idle the car’s rpm bounces and the car stutters and sometimes it stops. Also, I noticed that the temperature gauge also goes up and down with rpm. Sometimes after an acceleration the car runs smooth and start doing all that again and there is also lack of power. When the car’s rpm is bouncing the A/C lowers and speed up as well as the lighting inside. Once it got the check engine light on and I got like three codes p2337, p2336, p2338. My car has 21,342 miles.
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Friday, July 27th, 2018 AT 3:21 AM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,449 POSTS
All three of those codes are for cylinders #1, #2 and #3 that are exceeding the knock sensor thresholds. Those would cause it to go into limp mode or shut down to protect itself.
This could be caused by the turbocharger producing excessive boost or by a timing fault.
It also means the engine can be seriously damaged if it is run with this issue. The only way to discover where the issue is would be to use a good scan tool to watch the ignition timing and boost amounts along with the fuel injection numbers and see if the timing is changing during the injection of fuel. No real tests that can be done with simpler tools in this case.
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Sunday, July 29th, 2018 AT 8:27 AM

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