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Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Honda
Satisfied Customers: 47267
Experience:  16 years of experience
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I have a 2001 automatic Odyssey. Recently it has started

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Hi Steve. I have a 2001 automatic Odyssey. Recently it has started making a single knock - like a rock being thrown hard under the chassis on the passenger side - not like the thunk of an angry transmission - accelerating from a stop. It seems to happen once the car is warm. My mechanic cannot find anything. Suggestions? Thanks!

Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner till early morning.

Does swerving, bumps, braking, or accelerating effect this?

Customer: replied 6 months ago.
Hi Chris. I notice no effect of swerving, braking or bumps. Just accelerating from a stop. And not every time. For whatever it is worth, I am not a leadfoot in this vehicle. It isn't peppy like my old Camry. I did have some tire spinning on wet pavement at stops on slopes, but realized it was because my front tires were bald. I replaced them. The sound is a little more muted now. But it is still there. Helpful?

My suggestion is to check the front suspension components for a sign a blt or nut is moving, check the engine and trans mounts. A tool called Chassis ears, you can search at Amazon, will help in finding this noise origin.

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Thanks for using Just Answer, Chris

Customer: replied 6 months ago.
Well thank you for trying. I'm not mechanically inclined, so sleuthing for loose bolts isn't likely to happen, nor is buying chassis ears so that I can self diagnose. But I suppose that it is a direction in which to point my mechanic the next time that my car goes in.Happy Holidays.

Your welcome.

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