Bell sound when bouncing on something

[f1rst1]

I asked here in CO and they said there isnt much to do about it, other than maybe wrapping it, as someone mentioned above. I havent had them do that, but im getting the same bell

ugh...come on...guess they'll need to wrap it for me then

 

[Migs]

ugh...come on...guess they'll need to wrap it for me then

Yeah, disappointing...but i do really appreciate John and Red Nolands approach to service

 

[ORSO]

Sunday on a simple dirt road I also started to hear a metallic bell noise.
I looked for stones around the underbody and I modified the steering damper as you can see, but the noise persists. I tried to ride without it too.
In these two evenings I checked everything that could be checked and now I have serious doubts that it is the torque converter or worse the gearbox.
In the next few days I try to go to BMW and the dealer

I confirm that with the modification to the steering damper all noise from it disappears. I highly recommend this modification. The bell-like sound persisted however and after days of trying I found that the noise comes from the right rear spring slightly offset from the center. I don't know how to fix that noise yet, but it looks like I'll need to remove the spring to figure out the reason for the misalignment.

 

[ORSO]

yesterday I went back on dirt roads and made a video.
I am very doubtful that what I hear is the noise of the spring, but to remove the doubt I have to disassemble it.

do you have any idea what else could be causing that noise?

the noise is ALWAYS heard:
- on bumpy roads at medium speed. (at low speed it doesn't)

the noise is SOMETIMES heard:
- on bumps / potholes on asphalt roads
- while stopping or starting (which made me think of the torque converter or the gearbox. yesterday however on a dirt road on a slight descent I put the transmission in neutral and drove a few meters with only the brakes and the noise was still there, so I discard the idea of the torque converter or the gearbox)

View: https://youtube.com/shorts/IuSbJR_ppxo?feature=shared

 

[parb]

That is a bell sounding noice! A heat shield? It must be something with a bit of vibration to it over a larger surface in order to resonate and create that sound.

 

[Shaky]

I haven’t read all 0f this thread so please forgive me if it’s already been mentioned and discarded etc.

Earlier this year an IA dealer told me that a customers steering damper was damaged/defective from factory (suspected). It was fine for a while as some card or something had been stuffed up into the damper however this had eventually worked its way out and then the customer came back to the dealer with this funny sounding bell type noise from his front end. The dealer discovered it pretty quickly and rectified it.

As I understood it, the outer case of the dampener was resonating off the internal parts and making the noise.

 

[chrsbe]

Ok i also have it now. My dealer has not heard of this problem before. Is there already a solution or fix?

 

[ORSO]

I haven't found a solution yet.

I bought an action cam on Amazon to try to fix it underneath but I haven't had the chance to do this test yet

 

[ORSO]

yesterday I went back on dirt roads and made a video.
I am very doubtful that what I hear is the noise of the spring, but to remove the doubt I have to disassemble it.

do you have any idea what else could be causing that noise?

the noise is ALWAYS heard:
- on bumpy roads at medium speed. (at low speed it doesn't)

the noise is SOMETIMES heard:
- on bumps / potholes on asphalt roads
- while stopping or starting (which made me think of the torque converter or the gearbox. yesterday however on a dirt road on a slight descent I put the transmission in neutral and drove a few meters with only the brakes and the noise was still there, so I discard the idea of the torque converter or the gearbox)

View: https://youtube.com/shorts/IuSbJR_ppxo?feature=shared

I finally found out what that noise was coming from!!!

 

[chrsbe]

what is it? a stone?

 

[Shaky]

what is it? a stone?

Looks like a stone to me. Stuck in the disc brake by the looks of it.

 

[ORSO]

exactly, after weeks of checking the heat shields, the springs, the steering damper and everything else I finally found that f****** stone inside the front left disc that couldn't get out

 

[JP4]

exactly, after weeks of checking the heat shields, the springs, the steering damper and everything else I finally found that f****** stone inside the front left disc that couldn't get out

Howd you get it out?

 

[ethree]

Wondering if everybody has this sound. Speed isn't important, it is the importance of the bouncing, I had it at lower speeds too.

YouTube video here.

I think it is the stabilisation stuff (don't know the technical name) in front of the car,

View: https://youtu.be/LpcKlzz9-xs?feature=shared

I heard this on a trip in Maine. The “bell” sound. I was told it’s normal if you hit a hard bump, which I had. I asked, “Where is it coming from?” I was told the steering stabilizer. Fast forward a few months and I purchased the Fox ATS (super easy install) from Agile. Took off the old Bilstein and while doing so, I tapped the housing by accident. There was the bell noise. The guard on that factory unit is almost like a darn tuning fork. Not sure how that bell sound occurs while underway and hitting a bump but it does. Haven’t heard it since I put on the Fox ATS—which BTW, was nearly magical after I put it on. Don’t get me wrong, the factory unit is VERY durable and VERY stiff but the Fox ATS is pretty darn impressive.

 

[ORSO]

Howd you get it out?

Unable to get it out, I crushed it with a pair of narrow-nosed pliers

 

[ColoradoMike]

I started to hear this noise recently doing some trails here in CO - even had a few other Grenadiers in front of me notice the noise while on the the way to the trail we were running - I've got my first service coming up soon and will have the dealership check it out, after reading through this thread there still doesn't seem to be a definitive solution yet, but I wonder if anyone else has brought theirs in for this noise yet or not....will report back after my service if they have any answers - definitely showing them the videos in this thread though, that's the exact sound I hear every time I drive on anything bumpy.

Yeah similar situation here! We figured the sound was a rock hitting metal underneath. When we heard one ding it was "buy a round for the bar"....and sometimes we heard two in rapid successing "ding ding" and that meant the train was leaving the station....LOL

 

[f1rst1]

Yeah similar situation here! We figured the sound was a rock hitting metal underneath. When we heard one ding it was "buy a round for the bar"....and sometimes we heard two in rapid successing "ding ding" and that meant the train was leaving the station....LOL

we had the same thing in our group this past weekend running Argentine pass - of the 4 of us with Grenny's, 3 were ringing church bells all day long, lol

 

[ColoradoMike]

we had the same thing in our group this past weekend running Argentine pass - of the 4 of us with Grenny's, 3 were ringing church bells all day long, lol

Hahahah! We ran up thru Guanella pass and the Geneva campground road 119? up to the mine and the Iron Fens…fun day but not to self don’t do it on a Sunday….traffic was insane.

 

[shiv.nandak]

Here is how to replicate the bell noise... we believe it is caused by the steering damper cover. I took my Gren to a reputable shop to look it over and identify any issues before my appointment with the dealer (5 hrs away). There were a few other oddities we found.

 

[ORSO]

To understand if it is actually the shock absorber cover you can simply remove the steering damper or modify it by removing the cover as I did