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central locking pump problem

Discussion in 'A4/S4 forum(B5 Chassis)' started by jcb, Oct 24, 2011.

  1. jcb
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    jcb Active Member

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    in my ongoing issues with my car....discovered a new one.
    pump runs for a good 30 seconds on entry

    boot lock doesnt always open on fob and has to be opened manually with key. after I have done that it seems to work fine.

    so...

    1) could a sticky mechanism be stopping the pump from cutting off as it cant open the boot lock.?
    2) how does the pump know to stop pumping?
    3) would a leak in the boot line be able to cause this?

    4) should I torch this fecking thing and take the £5k it is insured for!?!?!?!?
    #1
  2. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    You have a vacuum leak, and if you dont sort it pronto the impeller in the pump will shatter.

    Pump stops pumping once it reaches a desired vacuum pull, or after a timeout if the vacuum pull never happens.

    You'll need to trace round the vac lines and look for a leak. Given the dodgy boot, it might be an idea to start there.
    #2

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