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Have you tried this . . . .
Disconnect the MAF sensor connector by turning it a quarter turn. This should force the car to run on the precoded fuel management mode and go to the 50% area. Supposedly, airflow info is generated by using rpm and throttle position instead of reading the MAF sensor.
If the lean drivability symptoms go away, the MAF sensor is probably bad. If they don't, the MAF sensor is probably OK and it might be time to replace the O2 sensor esp since it's been misconnected and sitting in the exhaust stream with no heater.
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Regards . . . . JimF
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'94 S500 Cpe
Visit my Mercedes Web Page
Last edited by JimF; 10-18-2007 at 01:59 AM.
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