Alternator

Asked by CYA48 Aug 17, 2017 at 02:12 PM about the 2009 Mercedes-Benz CLK-Class CLK 350 Coupe

Question type: Maintenance & Repair

Have a 2009 clk350...no issue with the battery or
altetnator...took to the dealer for diagnostic on
whininf aound that started a month ago...dealer
saying alternator going bad...how likely is
this...when sound first started mechanic said
power steering fluid..added ans it did stop for
about a week...started again...pwr steering fluid
level ok...so any suggestions...

3 Answers
22,300

Guru9FSV8 answered 6 years ago

Is voltage on low side of range? Is belt chafed like the pulley is holding it back? It is possible as they have bearings and will whine and whirl.

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3,265

John answered 6 years ago

Ensure no idler or ancillary pulleys are the culprit, but possible the bearings on alternator. It will output OK until it seizes, causing some havoc.

1 people found this helpful.
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CYA48 answered 6 years ago

Thank you both...they mention the bearings...guess I have to get it replaced...

Mark helpful

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