An under-tensioned alternator drive belt may cause a growling noise in the engine area at low speeds (usually when accelerating from a stop). This is often mistaken for catalytic converter failure.
Car Problem Reports
Chrysler 300M Under-Tensioned Alternator Drive Belt May Cause Growling Noise at Low Speeds
Chrysler 300M Problem
8 Reports
Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004
Engine Affected: 3.5L V6
Average Mileage: 129,500 mi (98,000 mi - 161,000 mi)
Verified
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Visitor, 2003 Chrysler 300M, 3.5L V6, 98,000 mi
when my car speed reaches 40mph it sounds like its in neutral.
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kdawg86, 2000 Chrysler 300M, 3.5L V6, 161,000 miRookie
at low speed grinding noise heard
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