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Diagnosing buzzing / grinding sound

Motor Vehicle Maintenance & Repair Asked on May 2, 2021

95 Acura integer makes a plastic buzzing sound for 15-60 seconds after startup. Sound eventually stops. Sound is originating from white box:

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The goal is to understand the cause of the sound and corrective action. What are the steps to diagnose root cause of the sound? Any lessons-learned or relevant experience is always appreciated.

One Answer

This is the brake fluid tank. Underneath it likely has the ABS actuators, which likely make the sound you are hearing. I'd start by diagnosing ABS (with a scanner). If you don't have the scanner that can diagnose ABS - pull the ABS fuse and start the car to see if the sound is still there.

Answered by EᑎOT on May 2, 2021

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