54 Laguna II spongy brakes - Renault Forums :: Independent Renault forum

Brakes/Hubs Brakes, Hubs, and etc

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 23rd February 2010 Thread Starter
Junior Member
Join Date: Feb 2009
Posts: 10
Nominated 0 Times in 0 Posts
TOTW/F/M Award(s): 0
Thanks: 0
Thanked 0 Times in 0 Posts
54 Laguna II spongy brakes

My Laguna has suddenly developed what I can only describe as spongy braking. Particularly noticable at speed, I apply the brake and I have a feeling of nothing happening initially (Imean like a split second) and then as the pedal keeps going the car reacts.

It doesn't make any noise. It doesnt pull to one side. There is no judder on braking. I have been playing "emergency stops" and the car pulls up quickly and straight.

A quick check of the calipers (front only mind) when having front wheels balanced today, showed no obvious reasons. No sign of contamination on discs or jammed pistons.

The tyre guy did point out one wheel was warped (spinning it on the balancing machine) but he said that should not affect the braking (he balanced it just fine and my judder at 55mph has gone).

Any ideas on this ? I was going to have all the wheels off and give the pads/discs/caplipers a good check. I have no facility to check runout for a warped disc, but as no judder on braking, is this relevant ?

Next option - change brake fluid in case of air/contaminates ?

After that, I guess the real cost looms with master cyl and servo....

For info, rear pads/discs changed Nov 2007, front pads April 2007 and front discs early 2006.
Currently in andyhamman's garage:
2004 Laguna II 2.0 Petrol Dynamique
andyhamman is offline  
  5 Lastest Threads by andyhamman
Thread Forum Last Poster Replies Views Last Post
54 Laguna II spongy brakes Brakes/Hubs mord 1 1186 23rd February 2010 07:19 PM
54 Laguna II Aircon compressor Heating & cooling madnoel10 1 1250 23rd February 2010 07:12 PM
Laguna II climate control flickers Electronics Diesel Man 4 1216 10th February 2009 09:12 PM
Laguna II stalls from cold Engines pugpower 10 3173 10th February 2009 09:01 PM
Laguna II heater smell Heating & cooling saabguy 4 1467 10th February 2009 08:45 PM
Sponsored Links
post #2 of 2 (permalink) Old 23rd February 2010
Platinum member
mord's Avatar
Join Date: Jun 2009
Posts: 5,250
Nominated 3 Times in 11 Posts
Nominated TOTW/F/M Award(s): 4
Thanks: 47
Thanked 514 Times in 490 Posts
Re: 54 Laguna II spongy brakes


you may have a Master Cylinder failing.
does the pedal slowly go to the floor if under constant pressure?
does it sometimes feel soft. and fail to act when braking?

try pressing the brake when stationary, can you hear any hissing from the left of the dashboard ?
if so then the servo is also on the way out.

Spare parts available for 2001 Scenic 1.9Dci, 97 Lag1, 02 Lag2.
everythings gotta go....
cheap prices...
Currently in mord's garage:
The CreditCard Holes sooo DEEEEP NASA have put up warning signs about a black hole on the Driveway: update, the driveway and home have fallen in...

Last edited by mord; 23rd February 2010 at 11:31 PM.
mord is offline  

brakes , laguna , spongy

Quick Reply

Register Now

In order to be able to post messages on the Renault Forums :: Independent Renault forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome