[LIRican]

There are a few threads on sounds so thought I would separate this one.

I had noticed a grinding/rattling sound at low gears when accelerating.

Brought it into Acura:

- Acura Tech heard sound and said it may be fuel pump but he will need Acura Engineer to come out.

-Acura Engineer determined it was the fuel line

- Acura will be replacing the fuel line in a week and will have engineer diagnosis the issue after

Currently going on 2 weeks and some days it has been at the dealership.

Detailed explanation:

In the meantime, I apologize for getting back late. They believe the noise is actually a vibration. The vibration is coming from the fuel line. They think the fuel line vibration translates to the body of the vehicle. Now, vibration in a fuel line is normal, however how this specific line with the way it's designed with the material it's made out of, it's possible sending vibration to the places that's securing it, then being sent to the body.

Link to sound:
Buzz/Rattle Acceleration noise

 

[Rafale]

I watched video and heard the noise but I'm struggling to see how a fuel line could be causing this rattling sound

 

[LIRican]

I watched video and heard the noise but I'm struggling to see how a fuel line could be causing this rattling sound

I’m far from an expert but I feel the same.

The sound also goes away at higher speeds.

 

[Chazzy J]

Good post. Interested to know the results.

 

[LIRican]

I will continue to update.

I really miss the Type S after being in the loaner MDX for two weeks. Huge difference in my opinion.

 

[AcuraRing]

Yes, pls provide updates. Agreed, grinding and a fuel line don't seem to match up as far as problems.

 

[23whiteMDX]

I have a similar sound coming from my new MDX. I only hear it when the car is cold and hasn't been driven for a while. The noise goes away after the car warms up. I describe my sound as a muffled exhaust or intake sound. I am going to go out and check the fuel lines and see if I notice anything unusual. It is difficult to tell but my sound seems to be coming from the front right side of the car..

 

[LIRican]

Update:

Just got my vehicle back.

I’m happy to report that After fuel line replacement the noise is gone.
I’m hopping anyone with the same issue will get a quicker resolution.

 

[Chazzy J]

Congrats. Glad to hear they resolved it