mot failure on rear brakes

  1. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #1
    hi there. had my mot 3 weeks back and it failed on a bit off stuff. did it again today and it failed on the back 2 brakles only. rbt was something like 46%.
    the problem is i have changed both calipers since its last mot and these 2 calipers have been on the car litterlly a week with new pads. so is it just unlucky with another set of calipers or is it something else??


    can anybody help at all please??

    many thanks
  2. Established Member Joined: Aug 2007 southampton Posts: 2253 saxo vtr
    #2
    have you bled them through properly? did you check the pistons were free moving before fitting
  3. Saxperience Addict Joined: Oct 2008 Plymouth, Fiddling - under a two poster ramp Posts: 14064 Audi
    #3
    tell him to put the handbrake on whilst he is using the foot pedel...
  4. Established Member Joined: Nov 2009 South East - Bromley Posts: 1106 Starlet GT Turbo [jap import]
    #4
    get your car over to kwikfit and get there free brakes test done
  5. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #5
    Quote:
    Originally Posted by stendog View Post
    have you bled them through properly? did you check the pistons were free moving before fitting
    i didnt fit them gaz4399 on here did it for me and he used a brake bleeding machine thing and how do u mean by free moving as inn theyre easy to wind??

    Quote:
    Originally Posted by tonto_VTR View Post
    tell him to put the handbrake on whilst he is using the foot pedel...
    i tried but he laughed

    Quote:
    Originally Posted by sam2kk8 View Post
    get your car over to kwikfit and get there free brakes test done
    cheers mate i probably will do but can they tell me anything diffrent etc if its the calipers that will need changing??
  6. Saxperience Forum Bum Joined: May 2007 peterborough Posts: 2861 2003 black vtr current escort van lol 2006 ford
    #6
    did you put new disc on with the pads if not do so
  7. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #7
    disk was really good condition anyway mate so i didnt think about doing it tbh
  8. Regular Poster Joined: Apr 2008 Sheffield Posts: 276 Peugeot 106 GTi, Clio 172
    #8
    New cable? or needs re-adjusting could've stretched.
  9. Saxperience Post Whore Joined: Mar 2003 United Kingdom (England) Posts: 7064
    #9
    Is car lowered & if so was brake bias adjusted?
  10. Saxperience Post Whore Joined: Jun 2008 North Wales Posts: 5576 Fabia VRS PD130/ VTR Mk2
    #10
    the pads might not be fully worn in yet, quick way to wear them in is to drive along the road handbrake up till it starts to bite, for no more than 10seconds release, give it a few mins do it again, repeat a few times.

    The pads glaze over if not used and when are new. could be worth a try
  11. Established Member Joined: Dec 2006 Posts: 1280
    #11
    make sure the compensator valve on the rear n/s is free
    if stuck could be your problem
  12. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #12
    Y do I need a cable. No the car isn't lowered. The calipers
    bled fine so not sure. Also I think the caliper pistons may be sezied so that willbe fun :/
  13. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #13
    Compensator spring had fallen off lol
  14. Saxperience Post Whore Joined: Aug 2009 ilkeston derbyshire Posts: 9823 C2 VTR stripped, 406hdi, clio 172
    #14
    well there you go!! at least it was something simple, glad you got it sorted!!! hate selling parts to people and then they have probs, knew the calipers were OK as we tried the rear brakes prior to taking the beam off! All MOT-ed now then?
  15. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #15
    O mate garage doing my head inn. Bloke said it needed a lAmba put it in and now he says it needs a cat -.- ffs lol
  16. Frequent Poster Joined: Feb 2010 birmingham Posts: 858 saxo vtr 2000 black modified
    #16
    id take it to another garage mate seems like ur mot man takin the piss to be honest.
    1 user thanked this post:
  17. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #17
    agreed i was going to put it for sale after the test as well :9 now its cost me more then i thought i dunno whether to run it to the ground lol
  18. Frequent Poster Joined: Feb 2010 birmingham Posts: 858 saxo vtr 2000 black modified
    #18
    try another garage mate see what they come up with.rear brakes on account for 25-30 percent of braking use so think ur man tryin to squeeze ur hard earned out of ya mate.
  19. Established Member Joined: May 2009 cleethorpes, Lincolnshire Posts: 1830 Astra 2006 (55) 1.9 cdti 150 sri 192hp 322ftlb
    #19
    no the brakes are fine mate we sorted them out. its just the fact it was "a lamaba and itll defo pass" and now its gone up to "it needs a cat as well". it just ruins faith tbh. but its a cat and thats it fingers crossed so ive told him ill get the cat. rather then fork out a £100 one from a motor factors ill get one for £60 off ebay. either way its only used once a year
  20. Frequent Poster Joined: Feb 2010 birmingham Posts: 858 saxo vtr 2000 black modified
    #20
    sorted mate.