r/MechanicAdvice • u/Jeclo25 • 1d ago

Clunking noise while accelerating

I’ve noticed for the past couple of months that when I start my car, switch between P,R,N,D and or accelerate a little fast from either a low speed to stop that it makes a clunk sound. I thought it’d be a transmission mount or cv axle but I’m leaning towards cv axle. This is me spinning the driver side and the clunking sound is coming from where the cv axle enters the transmission. It’s a 2012 Honda civic ex with 220k miles. Any advice helps.

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u/DrPhilsAuto 1d ago

Motor mounts

1

u/djltoronto 1d ago

This video looks and sounds normal.

1

u/Jeclo25 1d ago

It’s definitely not, maybe in this video, but when I’m driving it’s a very audible clunk, and I can feel it through the pedals

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u/Jeclo25 1d ago

https://reddit.com/link/p73ala7/video/f6pn3c0g3tmh1/player

1

u/djltoronto 1d ago

Your engine mount is not new, replace it, they are just a couple of bucks and just three bolts / 5 minutes

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u/djltoronto 1d ago

I'm not saying there's nothing wrong, I'm saying what you are demonstrating in the video, does not demonstrate anything at all that is wrong.

The clunking that you are trying to diagnose is something else, it is not your differential or driveline slack.

1

u/Jeclo25 1d ago

Ok I’ll replace the mounts and go from there ty!

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u/wstand 1d ago

Check your mounts. That transmission shouldnt be moving that much from turning an axle by hand.

1

u/Low-Information3546 1d ago

Hey! You need to check the driver-side inner CV axle. Make sure to inspect the inner splines and tripod joint after removal to confirm the wear before buying a new one, so you don't replace it unnecessarily.