C-Class (W202) 1995-2000: C 200 CDI, C 220 CDI, C 270 CDI, C 180, C 200 K,C 230 K, C 220, C230, C 280

rough idle and check engine light

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Old Apr 15, 2010 | 02:23 AM
  #1  
msquared9094's Avatar
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1999 C230 Kompersor
rough idle and check engine light

I accidently put the lowest grade gasoline in my 1999 C230 Kompressor. The check engine light came on and the engine has been been running rough. It does not always start on the first time I turn it on. I have since put several tanks of premium gas but the engine still runs rough and the check light is still on. Any suggestions?
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Old Apr 15, 2010 | 10:23 AM
  #2  
wammer23's Avatar
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1995 S420 Black/Gray
take it to Autozone or similar auto parts store and have them scan your codes (free). the code may lead you in the right direction
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Old Apr 16, 2010 | 04:19 PM
  #3  
tractorcrusher's Avatar
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From: Dallas, TX
1999 Mercedes C230, 1997 Lexus SC300 Twin Turbo
Did the check engine light come on during the time the low grade gas was in the car? Sounds to me like you may need a new MAF, which is super easy to install. That fixed my rough idle and turned off the CEL.
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Old Apr 17, 2010 | 10:06 PM
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rfoo's Avatar
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From: Manila, Philippines
1994 C220
Originally Posted by tractorcrusher
Did the check engine light come on during the time the low grade gas was in the car? Sounds to me like you may need a new MAF, which is super easy to install. That fixed my rough idle and turned off the CEL.
Easy to fix but an expensive one.
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Old Apr 18, 2010 | 03:03 AM
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vincesgfv's Avatar
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From: SoCal
SL 500 SP & C 280
IMO your oxygen sensor are out last time my 99 c280 got check engine light on my mec. replace the two front oxygen sensor the problem gone.
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