C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

c240 cylinders problem

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Old Apr 7, 2010 | 03:18 PM
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herbarz's Avatar
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MB w203 c240
c240 cylinders problem

Hi guys,

This is my first post / subject so hello everybody!
I do have some problems with my w203, c240 2,6 MB.
About 8 months ago engine check icon appeared so I went to my mechanic. He said that the catalytic converter is down but I can ride with it for some time.
For few months it was normal, but then it got worse. Car lost its power.

Few days ago I speeded up on the cold engine. Rpm's jumped to 5-5,5k but car has not gained the speed. After that a half of cylinders (3) just turned off and when I stopped on the lights, MB was shaking. So I turned it off, then launched and it was ok.
This situation happened again..
Today I cut 2 of 4 catalytic convertors (one was broken). Car gained some power, but cylinders are still turning off when I'm trying to gain speed rapidly.

Can someone please advise me.. what to do?
Sorry for bad english
Thanks in advance!
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Old Apr 8, 2010 | 02:07 AM
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MB w203 c240
anybody?
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Old Apr 8, 2010 | 02:12 AM
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Glyn M Ruck's Avatar
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Many things can cause this problem. To stop guessing please get an OBDII scanner & plug in under the steering column to read codes. Please tell us which codes are stored. Good luck
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Old Apr 8, 2010 | 03:12 AM
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TemjinX2's Avatar
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From: Corona, CA
03 g35 coupe...........02 c32 Sold
sounds like some horrible misfiring. I agree with Glyn, download the error codes. It'll save you a lot of time.
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Old Apr 11, 2010 | 09:22 AM
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MB w203 c240
Ok so I have the code numbers.

Car has now power when I'm trying to speed up..
maybe you have some ideas?
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Old Apr 12, 2010 | 02:53 PM
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MB w203 c240
??
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