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Groaning in engine bay, ABC?

Old Oct 14, 2007 | 08:54 AM
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Default Groaning in engine bay, ABC?

My E350 4matic "groans". I hear it and even feel it. It sounds like a pump that turns on and I think it may be thet ABC. No adverse driving effects but it sure is loud. The A/C on this car is also pretty loud, not too obvious inside the car but outside, wow.

Is this normal?

Ray
 
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