Question about Mercedes-Benz C-Class

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Uneven idling on start up. Voltage fluctuates between 11,4 to 12,4 and then stabilise at 13,4 at which idle also stabilize. Gives esp error. C180 W203.

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It could be a voltage regulator problem. or even a alternator problem when the volts drop the car looses electrical current causing the rough idle. try replacing alternator.

Posted on Sep 14, 2010

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