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Old 07-02-2004, 11:48 AM
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Join Date: Jul 2004
Posts: 7
1999 CLK430 error codes


Question for you:

My MZB (50,000 miles), is getting a intermittent "Check Engine light". A friend of mine performed diagnostics, and it comes up with codes "Fuel Trim 1 and 2". Supposedly the first question is "is my transmission running poorly?". Well, It certainly seems fine to me.

The "Check engine light" will go out after a few days. Does this sound like it could be the "Air Mass Sensor"? (also....there's only ONE AMM...right?) Is it easy to install?

Any advice would be much appreciated.



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Old 07-02-2004, 05:18 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Sounds like you do need an air mass sensor, MB number 113-094-00-48 & list is $224.
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Old 07-02-2004, 06:38 PM
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Join Date: Jul 2004
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Thanks Doc. I'm going for it.

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