1994 mk3 jetta/vento central locking

Discussion in 'VW Mk3 Jetta, Passat TDI and other/older diesels' started by m2rekkk, Aug 30, 2010.

  1. m2rekkk

    m2rekkk New Member

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    I have a problem with my central locking system/ alarm. When I try to lock my doors from the driver's side it only locks the drivers door. But if I try to open it then it opens all the doors. Same problem goes with my passanger door.
    There is also a problem locking/unlocking doors remotly. It never works on the first time i click, usually it works on the third try. Its like the vacuum pump gets the signal because it makes a short noise and the lights also blink but thats it. Im using WAECO MT150.
    I alredy checked the vacuum hoses and I didnt spot any leaks.
    Sorry for my grammer and I hope someone can help me with my problem.
    Last edited by a moderator: Aug 30, 2010
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  2. chittychittybangbang

    chittychittybangbang Administrator

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    Car:
    2006 Jetta TDI
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    CT
    Did you check the vacuum hoses in the door wiring boot? Did you check the wiring to make sure it hasn't cracked? There should be a rubber boot in the door hinge. Slide it back and carefully inspect all the wiring.

    Have a helper press the remote while you look at the vacuum pump. Maybe it's bad and can only go one way.
  3. 6eggs

    6eggs New Member

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    Is a WAECO MT150 an aftermarket remote?
  4. m2rekkk

    m2rekkk New Member

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    The wiring and the hoses seemed okay in the door wiring boot's.

    Also yes the WAECO MT150 should be an aftrermarket remote but i don't think that the problem is with it because the vacuum pump gets the signal when i click on the remote.
  5. 6eggs

    6eggs New Member

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    Chitty, do you know how to check the vacuum pump?
  6. Tastes like Diesel

    Tastes like Diesel New Member

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    Sep 20, 2010
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    Car:
    1996 Jetta TD
    central locking

    I would imagine that checking all the plastic lines for leaks could be tough to do visually. Perhaps if you have a Mity Vac you could tap into the lines and see if you can a) make the locks work and b) see if the vacuum holds. I would think you could also put a vacuum gage on the pump, unfortunately I don't have the specs for this.

    I recently repaired my own car and discovered that a line had let go at one of the connectors inside the door jamb area. The other observation that I made was that the pump would run for 10-20 seconds when activated. I'd be a bit concerned if you pump only come on for a second or two.

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