Fiat Coupe Forum
- Founded by Kayjey & James Northam
- Funded by the Club for the benefit of all owners
Fiat Coupe Club UK
join the club
Fiat Coupe Forum
 
» Announced
    Posting images


» Related sites
    Main club site
    fiatcoupe.net


» External data
    owners listed
 
Who's Online Now
0 registered members (), 206 guests, and 3 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums69
Topics113,543
Posts1,340,419
Members1,785
Most Online731
Jan 14th, 2020
Top Posters(All Time)
barnacle 33,520
stan 32,122
Theresa 23,294
PeteP 21,480
bockers 21,070
JimO 17,917
Nigel 17,366
Edinburgh 16,659
RSS Feeds
Club Events
Club Information
Track Events
Rolling Road/RWYB
Social Events
Non-UK Events
Coupé Related Chat
Coupé Spotting
Coupé News/Press
Buying/Selling Advice
Insuring a Coupé
Basic FAQ's
How to Guides
Forum Issues
Technical Problems
General Maintenance
Styling
Tuning
Handling
ICE and Alarm
Coupés for Sale
Coupés Wanted
Parts for Sale
Parts Wanted
Group Buys
Business Forum
Other Vehicles for Sale/Wanted
Other Items for Sale/Wanted
Haggling/Offers
Ebay links
Other Cars
Other Websites
General Chat
Previous Thread
Next Thread
Print Thread
Judder under braking #1617956
28/03/2018 16:31
28/03/2018 16:31
Joined: Mar 2018
Posts: 76
South Wales
DavidRobot Offline OP
Club member 1648
DavidRobot  Offline OP
Club member 1648
Reaping the fruits

Joined: Mar 2018
Posts: 76
South Wales
Hi, after some advice please. I’ve put down a deposit on a 20vt6. On the test drive there was mega judder under braking. Felt like warped discs, but Is there anything else that can cause this on a coupe? It’s fitted with mtech grooved discs.

I agreed to buy subject to this being resolved, but the seller has offered a price reduction without changing the discs or pads as his garage couldn’t get hold of the parts in time. That’s my fault as I asked to collect on Easter Monday.

Re: Judder under braking [Re: DavidRobot] #1617958
28/03/2018 16:53
28/03/2018 16:53
Joined: May 2011
Posts: 2,388
Caston, Norfolk
Blueboyracer Offline
Competition Level
Blueboyracer  Offline
Competition Level

Joined: May 2011
Posts: 2,388
Caston, Norfolk
I have the same issue on mine - when I have not driven enthusiastically for a while...

My discs are exactly the same too.

A fast drive with lots of braking hard and hey presto the judder is gone.

Re: Judder under braking [Re: DavidRobot] #1617959
28/03/2018 16:58
28/03/2018 16:58
Joined: Mar 2018
Posts: 76
South Wales
DavidRobot Offline OP
Club member 1648
DavidRobot  Offline OP
Club member 1648
Reaping the fruits

Joined: Mar 2018
Posts: 76
South Wales
Thanks, I did wonder if it might be glazed pads. I believe the car has been extensively tracked prior to being bought last year, so possibly might not have been driven enthusiasticly enough.

Also think it might have a cracked manifold, as was ticking when cold.

Re: Judder under braking [Re: DavidRobot] #1617967
28/03/2018 20:20
28/03/2018 20:20
Joined: May 2011
Posts: 2,388
Caston, Norfolk
Blueboyracer Offline
Competition Level
Blueboyracer  Offline
Competition Level

Joined: May 2011
Posts: 2,388
Caston, Norfolk
That is the give away of a crack for sure - could you see any white residue on the manifold or was the heat shield still in place?

Re: Judder under braking [Re: DavidRobot] #1617970
28/03/2018 20:30
28/03/2018 20:30
Joined: Mar 2018
Posts: 76
South Wales
DavidRobot Offline OP
Club member 1648
DavidRobot  Offline OP
Club member 1648
Reaping the fruits

Joined: Mar 2018
Posts: 76
South Wales
Heat shield was still in place so couldn’t see the manifold.

Re: Judder under braking [Re: DavidRobot] #1617974
28/03/2018 20:40
28/03/2018 20:40
Joined: May 2011
Posts: 2,388
Caston, Norfolk
Blueboyracer Offline
Competition Level
Blueboyracer  Offline
Competition Level

Joined: May 2011
Posts: 2,388
Caston, Norfolk
Good luck with this one and looking forward to updates over the weekend

Re: Judder under braking [Re: DavidRobot] #1617975
28/03/2018 20:41
28/03/2018 20:41
Joined: Mar 2018
Posts: 76
South Wales
DavidRobot Offline OP
Club member 1648
DavidRobot  Offline OP
Club member 1648
Reaping the fruits

Joined: Mar 2018
Posts: 76
South Wales
I’m a sucker for blue, so it’s a foregone conclusion!

Re: Judder under braking [Re: DavidRobot] #1617976
28/03/2018 21:13
28/03/2018 21:13
Joined: May 2011
Posts: 2,388
Caston, Norfolk
Blueboyracer Offline
Competition Level
Blueboyracer  Offline
Competition Level

Joined: May 2011
Posts: 2,388
Caston, Norfolk
Me too, having 2 Porto and a Blitz

Re: Judder under braking [Re: DavidRobot] #1618012
29/03/2018 19:13
29/03/2018 19:13
Joined: Apr 2012
Posts: 2,162
Glos
Brilly1uk Offline
Club member 1034
Brilly1uk  Offline
Club member 1034
Competition Level

Joined: Apr 2012
Posts: 2,162
Glos
Whilst the brakes have a judder, do they have any bite?
I have the MTEC discs and my biggest complaint is the lack of feel and bite, rather than necessarily their stopping power.
Like your judder, that may be more a pad issue than the discs?


Fiat Coupe 20VT
Alfa Romeo Spider
BMW X3
Re: Judder under braking [Re: DavidRobot] #1618023
29/03/2018 20:58
29/03/2018 20:58
Joined: Aug 2007
Posts: 8,057
Southsea
G
Gunzi Offline
Club member 189, Former Club President
Gunzi  Offline
Club member 189, Former Club President
Je suis un Coupé
G

Joined: Aug 2007
Posts: 8,057
Southsea
The judder can be build up of pad material on the disc which clears under repeated hard braking - just don't stop completely when you are in this process. A dual carriage way late at night is a good place to do this.

Have a read of this guide for cleaning the brakes.

Last edited by Gunzi; 29/03/2018 21:08. Reason: link
Re: Judder under braking [Re: DavidRobot] #1618047
30/03/2018 14:56
30/03/2018 14:56
Joined: Mar 2018
Posts: 76
South Wales
DavidRobot Offline OP
Club member 1648
DavidRobot  Offline OP
Club member 1648
Reaping the fruits

Joined: Mar 2018
Posts: 76
South Wales
Thanks Gunzi, I’ll give that a try when I pick it up.

Re: Judder under braking [Re: DavidRobot] #1618427
06/04/2018 18:08
06/04/2018 18:08
Joined: Sep 2007
Posts: 974
Behind Enemy Lines
Master_Mariner Offline
Club member 583
Master_Mariner  Offline
Club member 583
Enjoying the ride

Joined: Sep 2007
Posts: 974
Behind Enemy Lines
Has picking your new coupe up and "testing" the brakes cured the issue?

I bang on about this often but....have you checked the tyre pressures?

Hope its resolved.

MM

Re: Judder under braking [Re: DavidRobot] #1618464
07/04/2018 08:04
07/04/2018 08:04
Joined: Mar 2018
Posts: 76
South Wales
DavidRobot Offline OP
Club member 1648
DavidRobot  Offline OP
Club member 1648
Reaping the fruits

Joined: Mar 2018
Posts: 76
South Wales
I haven’t had chance to do any heavy braking yet, but I’ll be checking tyre pesssures and swapping wheels front to rear as I think I’ve got a bent wheel.


Powered by UBB.threads™ PHP Forum Software 7.7.1
(Release build 20190129)
PHP: 7.3.33 Page Time: 0.014s Queries: 15 (0.007s) Memory: 0.8001 MB (Peak: 0.9057 MB) Data Comp: Off Server Time: 2024-03-28 11:22:03 UTC