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  1. #1
    Junior Member
    Join Date
    May 2011
    Posts
    2

    Central Locking problems - Golf mk3

    Hi,

    I own a Golf mk3 GTI and last week, the central locking decided to play up. When I turned the key on either the drivers side or passenger doors to lock or unlock the car it would not lock/unlock the opposite door, But it would lock/unlock the petrol cap and boot so it wasn't an immediate problem. When I locked/unlocked the car the central locking unit in the boot would make a long whirring sound for about a minute and then stop.

    So I thought this to be the problem. I opended it up and noticed the sound is coming from the motor inside the cylinder section of the unit. I followed the pipes as best as could without ripping apart the whole car to identify which ones were for the doors, boot and petrol cap.

    I then tested the unit to see if when the key is turned if it blows air out to unlock and sucks air in to lock, and it worked fine. So it could be that a pipe is blocked or split? If it was split it would make sense because not enough air pressure is getting to both doors, petrol cap and boot to unlock them all at the same time.

    I then disconnected everything and tested each one by one. so drivers door, passenger door etc. to do this i blew down each pipe to see if it unlocks. This worked! So I ruled out any blocks or splits in the pipes.

    I then played around with the mechanism on the unit (oops) there are two white cogs/discs that sit over a metal pin. See pics.

    [img width=800 height=598]http://img860.imageshack.us/img860/6769/img0257c.jpg[/img]
    [img width=523 height=700]http://img835.imageshack.us/img835/406/img0260v.jpg[/img]

    I didn't take note where the cogs sit before I moved them (again oops). Do the cogs sit either side of the metal pin not touching? Or does one cog touch the pin and the other doesn't? As both cogs sit on a rod that moved in and out I'm guessing as the key is turned? Not quite sure because I couldn't see this happening when I tried to understand what those 2 cogs do. Can some one explain how they work?

    Now after playing with the mechanism. If I lock/unlock the car it only unlocks that door. It no longer locks/unlocks the boot nor petrol cap After about 3 hours of breaking it even more I feared the motor will burn out so I stopped and I am hoping some one can suggest what's going on?

    In addition to all this I also have a alarm on a thob that up until this all started, unlocked everything by the button as well as deactivating/activating the alarm. Now it only deactivates/activates the alarm. It will not open any doors, petrol cap or boot.

    At the moment I have taken the central locking unit out, permanently locked my boot, the petrol cap is always open and I have to lock/unlock each door manually

    Hopefully that explains everything, sorry for the long post.

  2. #2
    Administrator Crasher's Avatar
    Join Date
    Apr 2006
    Location
    Nottingham, England
    Posts
    13,939

    Re: Central Locking problems - Golf mk3

    I think you will have to get another pump.
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 8x18 Wolfrace Pro-Lite eco 2.0 wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:

  3. #3
    Junior Member
    Join Date
    May 2011
    Posts
    2

    Re: Central Locking problems - Golf mk3

    But the pump seems to be working. It blows air out when I lock the car and sucks air in when I unlock the car. What else is it supposed to do? Unless its not sucking and blowing (excuse the pun) as much as it should. How much does a pump cost? I seen some one bay for 55 but I thought that was a little steep?

  4. #4
    Administrator Crasher's Avatar
    Join Date
    Apr 2006
    Location
    Nottingham, England
    Posts
    13,939

    Re: Central Locking problems - Golf mk3

    If you think 55 is steep you should see the price of a new one! If the system is air tight as you have indicated it must be that the pump is weak.
    2003 Skoda Octavia VRS Estate. APR 98RON remap, APR R1 diverter valve, Jetex exhaust, K&N panel filter, 8x18 Wolfrace Pro-Lite eco 2.0 wheels with 225/40 18 Uniroyal Rainsport 3 tyres.
    2006 Polo GTI 1.8T, APR 95RON remap
    1988 Golf 2 GTI 16 valve, 2.2 with Weber Alpha injection
    1983 Golf 1 GTI 8 valve, 2 litre with Eurospec racing 42/36 head
    1972 1302LS auto 1641cc conversion

    Vile Invention

    Dark was that day when Diesel conceived his grim engine that begot you, vile invention, more vicious, more criminal than the camera even, metallic monstrosity, bale and bane of our culture, chief woe of our Commonweal. How dare the Law prohibit hashish and heroin yet license your use, who inflate all weak inferior egos? Their addicts only do harm to their own lives: you poison the lungs of the innocent, your din dithers the peaceful, and on choked roads hundreds must daily die by chance-medley. Nimble technicians, surely you should hang your heads in shame. Your wit works mighty wonders, has landed men on the Moon, replaced brains by computers, and can smithy a "smart" bomb. It is a crying scandal that you cannot take the time or be bothered to build us, what sanity knows we need, an odorless and noiseless staid little electric brougham.

    W.H. Auden (1907-1973), A Curse:


 

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