Squeaking sound
Track Day
Joined: May 2016
Posts: 20
Likes: 9
From: Vancouver B.C
Squeak gone!!
2012 991.1 same issue as we are all having. A very annoying styrofoam sounding squeak that sounds like it is being emitted from under the dash area. My sound was indifferent to tank fuel level, just horrid.
Fix? I popped off the cowl in the frunk and went to town with a can of silicone spray, hit everywhere my hand/can could reach focusing on the firewall area. Some spots I could not hit directly so sprayed a ton of lube along the firewall and let it seep down. Silicone spray is great in that sense, it doesn't leave a dripping mess that other more popular lubes like WD40 possibly would. I also sprayed the upper strut mounts and let it seep in good and proper.
Drove it 30 mins later and the squeaking has gone, so it was either or my upper strut mounts or the tank pads. Whatever it was, happy have it gone.
This thread was incredibly helpful to say the least, thank you fellow R-listers....
Fix? I popped off the cowl in the frunk and went to town with a can of silicone spray, hit everywhere my hand/can could reach focusing on the firewall area. Some spots I could not hit directly so sprayed a ton of lube along the firewall and let it seep down. Silicone spray is great in that sense, it doesn't leave a dripping mess that other more popular lubes like WD40 possibly would. I also sprayed the upper strut mounts and let it seep in good and proper.
Drove it 30 mins later and the squeaking has gone, so it was either or my upper strut mounts or the tank pads. Whatever it was, happy have it gone.
This thread was incredibly helpful to say the least, thank you fellow R-listers....
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
Hey guys - I'm having what I think is the same issue and it is driving me absolutely insane. My car is CPO and due to be at the dealer in a week. I was able to capture the sound:
Did yours sound like this by any chance? Is this how the fuel tank pad issue sounds like?
I am not convinced my issue has to do with the cowl in the frunk as I popped it off and drove without it so see if made any difference. No luck.
Did yours sound like this by any chance? Is this how the fuel tank pad issue sounds like?
I am not convinced my issue has to do with the cowl in the frunk as I popped it off and drove without it so see if made any difference. No luck.
Last edited by RB82; Jul 14, 2025 at 07:05 PM.
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
To others that have gone through the service bulletin 1403, how does this noise I posted above compare to what you had?
Instructor
Joined: Sep 2021
Posts: 184
Likes: 155
From: Barcelona, Spain
Hi everyone,
My car has the same symptoms as described in the messages above: started hearing some squeaking, styrofoam like, with a full gas tank while driving to Italy on a hot summer's day. I had read this thread a few days before, and was very thankful for it, because I would have never guessed that noise came from the frunk!
I bought a can of silicon spray and tried to apply against different parts of the firewall, based on what I read here and where I understand the gas tank to rest against the firewall.
Is anyone able to point out more specifically where to spray some once the cowl is removed so that I have the best chance of success?
My car has the same symptoms as described in the messages above: started hearing some squeaking, styrofoam like, with a full gas tank while driving to Italy on a hot summer's day. I had read this thread a few days before, and was very thankful for it, because I would have never guessed that noise came from the frunk!
I bought a can of silicon spray and tried to apply against different parts of the firewall, based on what I read here and where I understand the gas tank to rest against the firewall.
Is anyone able to point out more specifically where to spray some once the cowl is removed so that I have the best chance of success?
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
The cost is to be picked up by the owner as despite the fact the warranty covers the fuel system, this is not considered to be a fuel system problem. Here in Canada, the dealership wanted $2600 + tax. I suppose I'm going to town with silicone spray as well....
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
Hi everyone,
My car has the same symptoms as described in the messages above: started hearing some squeaking, styrofoam like, with a full gas tank while driving to Italy on a hot summer's day. I had read this thread a few days before, and was very thankful for it, because I would have never guessed that noise came from the frunk!
I bought a can of silicon spray and tried to apply against different parts of the firewall, based on what I read here and where I understand the gas tank to rest against the firewall.
Is anyone able to point out more specifically where to spray some once the cowl is removed so that I have the best chance of success?
My car has the same symptoms as described in the messages above: started hearing some squeaking, styrofoam like, with a full gas tank while driving to Italy on a hot summer's day. I had read this thread a few days before, and was very thankful for it, because I would have never guessed that noise came from the frunk!
I bought a can of silicon spray and tried to apply against different parts of the firewall, based on what I read here and where I understand the gas tank to rest against the firewall.
Is anyone able to point out more specifically where to spray some once the cowl is removed so that I have the best chance of success?
Also, since I was at it, I sprayed a bit on the cowl that covers that area. I found there is a piece of foam under that cowl that ends up in contact the battery (or the battery bracket) that makes a similar squeaky sound. I also sprayed a bit at the rear end of the cowl, where it connects with that plastic piece that runs under the windshield. I know my issue wasn't the cowl as I drove without it and still hear the squeak. But...doesn't hurt as the theme is to go to town with some silicone.
I'm not sure if it makes a difference or not but my tank was not full when I sprayed the silicone. Reason I say that is because if the culprit really is the tank foam pads, and it only makes the noise when it's full and/or hot days (which was my case), it means the tank is expanding and getting in touch with something. So not having it full when you spray silicone may help it get to where it needs to go.
After I emptied a full can (mine was actually 3/4s full), I went for a ride and hit many bumpy roads. No squeak could be heard. I filled up the tank after that and continued my way on bumpy roads. Seems to be quiet now. Fingers crossed it's finally gone and I can enjoy driving my baby again. If I hear this silly squeak again I'll report back.
Good luck and hopefully this helps, while not giving you a very specific direction...
Cheers
Last edited by RB82; Jul 29, 2025 at 08:16 AM.
Instructor
Joined: Sep 2021
Posts: 184
Likes: 155
From: Barcelona, Spain
Thank you for taking the time to share, that's very helpful! I think I was way too reasonable in my first application, I understand now that given the configuration, I need to basically empty the can in there and let it seep.
I'll give it a go and report back.
I'll give it a go and report back.
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Instructor
Joined: Sep 2021
Posts: 184
Likes: 155
From: Barcelona, Spain
We drove 400 miles from Tuscany to southern France today, and yesterday's more generous attempt seems to have done the trick.
Zero noise in the cabin despite hot temperatures and a full gas tank when we left. Me and my wife were very glad!
Thank you to everyone who contributed to identifying this issue and coming up with a cheap and easy fix!
Zero noise in the cabin despite hot temperatures and a full gas tank when we left. Me and my wife were very glad!
Thank you to everyone who contributed to identifying this issue and coming up with a cheap and easy fix!
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
We drove 400 miles from Tuscany to southern France today, and yesterday's more generous attempt seems to have done the trick.
Zero noise in the cabin despite hot temperatures and a full gas tank when we left. Me and my wife were very glad!
Thank you to everyone who contributed to identifying this issue and coming up with a cheap and easy fix!
Zero noise in the cabin despite hot temperatures and a full gas tank when we left. Me and my wife were very glad!
Thank you to everyone who contributed to identifying this issue and coming up with a cheap and easy fix!
I have challenged the response from my local dealer about not covering bulletin 1403 under my extended warranty directly with Porsche Canada HQ. I have a close friend that works for Porsche Canada. They decided to look into it closer. If I get a response that they will cover under warranty I'll report back to this forum. Only problem for them now will be dealing with the greasy mess they are going to be left with after I emptied a full bottle of silicone spray. 😂
AutoX
Joined: Jul 2025
Posts: 14
Likes: 0
From: San Francisco Bay Area
So, I sprayed by suspension mounts and it seemed to go away but now its back. It sounds like its coming from my Targa top. Its not the pop flex sound that occasionally happens with the top that the dealership told me was the top flex. Its that jittery sound that so many of us hear. If its coming from my Targa top, what do you suggest? Thanks for your feedback, all!
AutoX
Joined: Jul 2025
Posts: 14
Likes: 0
From: San Francisco Bay Area
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
For some convenient reason, this is treated as a "squeaky sound" issue and not for the real fact that it's the failure of the foam that separates the fuel tank from the firewall. And "squeaky sound" issues are not covered under warranty.
I'm any case. After spraying a good load of silicone against the firewall I have not had the issue again...so mine will stay like that for now.
I'm any case. After spraying a good load of silicone against the firewall I have not had the issue again...so mine will stay like that for now.
Track Day
Joined: Jul 2025
Posts: 21
Likes: 9
From: GTA - Canada
So, I sprayed by suspension mounts and it seemed to go away but now its back. It sounds like its coming from my Targa top. Its not the pop flex sound that occasionally happens with the top that the dealership told me was the top flex. Its that jittery sound that so many of us hear. If its coming from my Targa top, what do you suggest? Thanks for your feedback, all!