Question about 2004 Acura MDX
I have personally never heard of a grinding catalytic. also, these vehicles are not known for cat failures (not to say it can't happen). my first suspicion would be a faulty wheel bearings or lumpy tire. next time you are driving, try swerving the car side to side and listen for if the tone of the noise slightly changes. if so, you can bet you have a bad bearing. i would get a second opinion on the noise, the best way to check and isolate a bearing noise is to put the car on a hoist and accelerate to the speed of the noise, with someone underneath using a stethescope probe to isolate the source of the noise. if the noise goes away on the hoist, you can bet its a tire noise. good luck!
Posted on Jun 01, 2010
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Posted on Jan 02, 2017
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