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Q:

Check Engine Light on 2002 Mercedes-Benz C240

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My car would make a funny noise when I turned the ignition and when it finally started it ended up quitting on me after stopping at a red light.
(2) Answers
Sounds like a fault in fuel trim, or something else emissions related. Here is some background on the check engine light: http://repairpal.com/check-engine-light

These are complicated problems, and I recommend finding a good diagnostic technician who can find the underlying problem and find a fix.