Thread: Serious shuddering / stumbling
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      11-26-2013, 08:17 PM   #23
shashi27
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Drives: 11 Z4 35is
Join Date: Jan 2011
Location: NJ, USA

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Dealer diagnosed problem as bad plug and coil. Replaced both. Will pick it up in the morning. Glad they were able to find it as without the ESS tune it was not as perceptible.
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