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ABS Sensor

Discussion in 'A4/S4 forum(B5 Chassis)' started by tazzy baby, Feb 13, 2010.

  1. tazzy baby
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    tazzy baby Rookie

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    [Feb 13, 2010]
    Hi all anyone know how far a ABS Sensor has to be pushed in the one on my car is no good so had a spare one and i dont know how far to push it in the holder Cheers
    #1
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  3. mattpone
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    mattpone New Member

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    [Mar 7, 2010]
    push it all the way in, u cant push it too far
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  4. yendall24
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    [Mar 7, 2010]
    you can push it in too far then it hits the sensor ring and chews the end off as i found to my cost if its moving freely in the hole push it all the way in then back it off a couple of mm
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  5. Geeman
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    Geeman Low Life

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    [Mar 7, 2010]
    Is there a set measurement it needs to be positioned away from the sensor ring...? I've got to do one on mine...

    Easy job? Not investigated the work involved yet.
    #4
  6. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 7, 2010]
    Are we talking about front or rear, but looking at elsawin there is nothing about a gap distance.
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  7. Geeman
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    Geeman Low Life

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    [Mar 7, 2010]
    Rear left on mine...
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  8. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 7, 2010]
    This is the only quote from elsawin about a gap.

    "
    Pay attention to the following points when routing the speed sensor wiring:
    ’ Route the speed sensor cable -1- in the area shown on the left and right below the brake pipe -2-.’
    On the left-hand side, maintain a clearance of about 2 cm between the heat shield of the exhaust system and the speed sensor cable.

    "
    #7
  9. Geeman
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    Geeman Low Life

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    [Mar 8, 2010]
    So it tells you nothing really! lol
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  10. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 8, 2010]
    O yes, less than useless.

    On a side note does anyone know how to remove the front sensor? Elsawin say's pull it out (Fat chance) the dam thing is stuck in there, and don't want to damage it.

    As the ABS rotor on the is part of the drive shaft and hidden away, has anyone ever had to clean the front rotors?
    #9
  11. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Mar 8, 2010]
    i have always pushed them in till they touched the backed them out a few mm.

    Soaking the stuck sensor in WD40 or similar can aid removal. however it will probably be simpler to drop the driveshaft out to clean the reluctar ring with out risk to the sensor
    #10
  12. Geeman
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    Geeman Low Life

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    [Mar 8, 2010]
    #11
  13. Geeman
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    Geeman Low Life

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    [Mar 8, 2010]
    #12
  14. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 8, 2010]
    Just seen the price of the OEM parts, over £100.....
    #13
  15. Geeman
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    Geeman Low Life

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    [Mar 8, 2010]
    Yep! That's what I want to make sure the eBay items at £20 are okay to use...
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  16. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 8, 2010]
    I'll go to a breakers, if I need to replace them. After looking at the work that needs to be done to clean the rear rotors, I'm going to leave it till the weekend as the bolts holding the rear caliper would need to be replaced as they are badly corroded. Another few quid down the drain replacing bolts!
    Last edited: Mar 8, 2010
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  17. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Mar 8, 2010]
    Looks good to me.!

    The connector etc looks as i remember them. Its under warrenty if it breaks, so for £20 it's prob worth a punt
    #16
  18. Geeman
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    Geeman Low Life

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    [Mar 8, 2010]
    Coolio... the voice of the expert has spoken... as eBay takes another £20 out of my account... lol
    #17
  19. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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  20. hardhitter
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    hardhitter Member

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    [Mar 8, 2010]
    There has to be a fairly close distance between the pick-up sensor (they are inductive type I think) and the trigger wheel. If it's too far away you won't pick up the signal, similarly you don't wan't it touching or rubbing against it as it will ruin it.
    #19
  21. Geeman
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    Geeman Low Life

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    [Mar 8, 2010]
    So... push it all the way in till it touches the ring, then pull it out 1-2mm...?
    #20
  22. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Mar 8, 2010]
    Yarp !! always done me proud
    #21

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