What's new
Porsche 911 UK Enthusiasts Online Community Discussion Forum GB

Welcome to the @Porsche911UK website. Register a free account today to become a member! Sign up is quick and easy, then you can view, participate in topics and posts across the site that covers all things Porsche.

Already registered and looking to recovery your account, select 'login in' and then the 'forget your password' option.

Porsche Specialist Surrey, Porsche Specialist London, Porsche Specialist East Sussex, Porsche Specialist West Sussex, Porsche Specialist South

HELP - Noise from back of 911

R

R2M

New member
Joined
13 Jul 2009
Messages
5
I bought a 911 4S about 4 weeks ago. Its a 56 plate and has 11000 miles on the clock.

After about 2 weeks a red exclamation mark appeared on the dash. I reported it to Porsche and they could not find anything wrong.

Then last week, I heard a noise from the rear of the car (passenger rear). I thought i had gone over something but it was a straight smooth road. I have been listening for the sound and it seems to happen mostly when braking during latter stages just as the car is coming to a standstill. Its like callipers are sticking or not releasing. I have checked the pads and discs -and there is no sign of stones scoring the discs.
On a couple of occasions it has happenned when going over a small sleeping policeman - which i practically roll over carefully and gently.

I can best describe this sound like a hollow metallic vibration.
Braking feels normal though.

Its happenning more frequently and i wonder if anyone out there knows what this can be.

Thanks

:sad: :?:
 
What warnign light do you get on the dash ?? Is it just the ! mark and is it permanently on? Also do you notice anything with the performance ?


Theo
 
Just a thought.

How long was car sitting in one place before you bought it??

Maybe handbrake mechanism partially stuck in the 'on' position in rear disc?
Or maybe rear wheel bearing although miles would suggest not but you do get occasional bad ones however this does not explain away warning light.

:thumb:
 
The red warning light s the ! on its own. It stayed on until i switched th engine off and thenit didnt apprear again. I took the car out again just now on the open road and the light didn't come back on.
The cars peformance is absolutely fine


theogeor said:
What warnign light do you get on the dash ?? Is it just the ! mark and is it permanently on? Also do you notice anything with the performance ?


Theo
Click to expand...
 
So you are not getting any engine management warning lights which is good. The targatopper suggestion looks possible. Try to play a bit with the handbreak and see if you can replicate the noise.
The ! sign comes on when the handbreak is not release properly as well (It happened to me a couple of times :oops:

Hope is nothing.. Just keep an eye on it

Theo
 
The car was in thePorsche garage on Saturday and i bought it by tuesday.
It doesn't appear to the the wheel bearing. I've had a car before where it was and it does't sound like that.

I will check the handbrake position again tomorrow and see if that does anything.

Thanks for your reply




targatopper said:
Just a thought.

How long was car sitting in one place before you bought it??

Maybe handbrake mechanism partially stuck in the 'on' position in rear disc?
Or maybe rear wheel bearing although miles would suggest not but you do get occasional bad ones however this does not explain away warning light.

:thumb:
Click to expand...
 
Thanks
I'll try that tomorrow.

Hope it is nothing also.

Cheers

theogeor said:
So you are not getting any engine management warning lights which is good. The targatopper suggestion looks possible. Try to play a bit with the handbreak and see if you can replicate the noise.
The ! sign comes on when the handbreak is not release properly as well (It happened to me a couple of times :oops:

Hope is nothing.. Just keep an eye on it

Theo
Click to expand...
 
You could try jacking up car and then with handbrake off spin both the rear wheels by hand and see if they both rotate freely.

:thumb:
 
Hi

The car went into Porsche and I took the mechanic out with me so i could let him hear the noise for himself.
He said it was the steering rack that was making the noise. They have now replaced this and this particular noise has gone.
However, the noise coming from the left rear side when i break is still there. It still happens at the end of breaking and on occasion on uneven surfaces.
The breaks have been checked and are absolutely fine.
The car is going back into Porsche next Friday to see if we can get to the bottom of this one.

Cheers



targatopper said:
You could try jacking up car and then with handbrake off spin both the rear wheels by hand and see if they both rotate freely.

:thumb:
Click to expand...
 
Similiar whirring brake(?) sound...

I bought a used 997 C2S and the first night, while pulling up to a stop, experience what I describe as a "circular whirring noise" like wha... wha... wha... that dissapeared when I put the brakes on. It's continued on and off over the last year.
Recently while driving through the Canadian Rockies I experienced it at high speed, but at a much faster whirring sound, then does dissappear 100% when I apply the brakes, then to return a short while later. I check the front end out. I have the PCCB system. Could it be that the brake calipers are not releasing far enough? Very annoying!
Thanks,
Joel Parker
Vancouver, BC, Canada
 
Sounds like one or more distorted brake discs. Might be worth having them checked for run-out.

Cheers,
Roy
 
You must log in or register to reply here.

Similar threads

Indischrot
Rattle Diagnostic - Help!
Replies
14
Views
1K
spinnaker
S
M
Creak that speeds up when accelerating
Replies
5
Views
570
Matt99man
M
D
991.1 noise defect in cabin
Replies
2
Views
554
sp1ke
S
P
991.2 new to me from OPC back in for water pump
Replies
3
Views
1K
Zingari
Zingari
Porsche News
Porsche's 911 Mountain Climber record breaker...
Replies
0
Views
655
Porsche News
Porsche News
C
Back in a Cayenne
2
Replies
21
Views
5K
nigel99
nigel99
C
  • Locked
Sold 1998 Porsche 996 3.4 Carrera 2 Manual Coupe - early cable throttle car, rebuilt engine
Replies
4
Views
584
conanius
C
Passion for perfection Porsche Car Sales

Latest posts

New Threads

Porsche Model Range

Porsche 911

Porsche 992: 2018- Porsche 992: 2018- Porsche 991: 2011-2019 Porsche 991: 2011-2019 Porsche 997: 2004-2012 Porsche 997: 2004-2012 Porsche 996: 1997-2005 Porsche 996: 1997-2005 Porsche 993: 1993-1998 Porsche 993: 1993-1998 Porsche 964: 1989-1993 Porsche 964: 1989-1993 Porsche Carrera 3.2: 1983-1989 Porsche Carrera 3.2: 1983-1989 Porsche Carrera SC: 1977-1983 Porsche Carrera SC: 1977-1983 Porsche 930 Turbo: 1975-1989 Porsche 930 Turbo: 1975-1989 Porsche Early 911: 1964-1977 Porsche Early 911: 1964-1977

Porsche Hypercars

Porsche 918 Spyder Porsche 918 Spyder Porsche Carrera GT Porsche Carrera GT Porsche GT1 Porsche GT1 Porsche 959 Porsche 959

Other Current Porsche Model

Porsche Taycan : (2019-0%) Porsche Taycan : (2019-0%) Porsche Macan : 2013- Porsche Macan : 2013- Porsche Panamera : 2009- Porsche Panamera : 2009- Porsche Cayman: 2005- Porsche Cayman: 2005- Porsche Cayenne: 2003- Porsche Cayenne: 2003- Porsche Boxster: 1997- Porsche Boxster: 1997-

Porsche Legacy Models

Porsche 928 Porsche 928 Porsche 968 Porsche 968 Porsche 944 Porsche 944 Porsche 924 Porsche 924 Porsche 914 Porsche 914 Porsche 912 Porsche 912 Porsche 904 Porsche 904 Porsche 550 Porsche 550 Porsche 356 Speedster Porsche 356 Speedster Porsche 356 Porsche 356

Forum statistics

Threads
124,610
Messages
1,442,060
Members
49,043
Latest member
MartynT

porsche insurance porsche parts porsche sales porsche car sales porsche for sale
porsche classic sales porsche tuning porsche sold porsche specialist porsche engine rebuilds porsche driver training porsche car sales porsche exhausts

Community platform by XenForo® © 2010-2024 XenForo Ltd. XenForo theme by xenfocus

www.911uk.com @Porsche911UK THE DEFINITIVE PORSCHE FORUM Copyright © 911UK 2002-2024 All rights reserved.

911uk.com is not associated and is wholly independent of Porsche Automobil Holdings SE, Dr. Ing.h.c.F.Porsche AG, Porsche Cars GB, its subsidiaries and offical Porsche centres. Any word, phrase or graphic that in any way resembles anything to do with the Porsche name or organisation are registered trademarks of Porsche Automobil Holdings SE and Dr. Ing.h.c.F. Porsche AG.

Back
Top