The car stumbles and almost stalls when stopped at a light.

I had this very same problem before. It also has happened to me when I am on the highway and need to suddenly get off of the accelerator pedal.

Once you get back on the accelerator, car almost stalls, picks up speed very slowly. Sometimes it just "wakes up" and is off and away again.

The coughing and stumbling idling are happening at the same time of year again too, I am coming up to almost 1 year with this rebuilt alternator. It is a geniune factory rebuild.

Does anyone know if MB has a warranty on rebuilt alternator's?

Please offer anything you can guys.

Thank you very much.

Mike McKinney

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1989 300CE - 269,000 km
1994 SL600 - 59,000 km