Audizine - An Automotive Enthusiast Community

Results 1 to 14 of 14
  1. #1
    Active Member Two Rings
    Join Date
    Mar 10 2015
    AZ Member #
    319714
    Location
    Alaska

    ABS sensor ring loose

    Guest-only advertisement. Register or Log In now!
    This is on the LR of my A4 quattro, the abs sensor ring has come loose from the cv axel, I'm thinking of tack welding it back on do you think it will work?
    Attached Images

  2. #2
    Active Member Four Rings EuroxS4's Avatar
    Join Date
    Jan 24 2010
    AZ Member #
    53856
    My Garage
    2003 Atlas Grey A4 Avant 1.8T 6speed manual quattro,2002 GSXR 600
    Location
    Paramus,NJ USA

    why?? It should be a rather snug fit to keep it from coming off.
    VW/Audi Immobilizer removal and immobilizer adapting solutions for any and all VAG Vehicles, Odometer matching, SKC/Pin retrieval services/ Component Protection/Module Coding/Diagnosis Services and repairs.RB4/RB8 Specialist cloning and repairs. Located in Northern NJ. For inquries pm for details or contact me via Whatsapp
    Ziddy Autowerks

  3. #3
    Veteran Member Four Rings Kevin C's Avatar
    Join Date
    Mar 28 2015
    AZ Member #
    323385
    My Garage
    1987 Dodge Raider G54B Turbo
    Location
    Portland OR, United States

    Hardenable steel may not be the best candidate to tack weld. I would clean up the surfaces and put it back on with Loctite stud and bearing mount.
    2003 02X Six speed swapped, RS4 RSB, H&R FSB, B7 brakes, 2.0T stroker, DSMIC's, B7 CTS K04 turbo.

  4. #4
    Active Member Four Rings EuroxS4's Avatar
    Join Date
    Jan 24 2010
    AZ Member #
    53856
    My Garage
    2003 Atlas Grey A4 Avant 1.8T 6speed manual quattro,2002 GSXR 600
    Location
    Paramus,NJ USA

    Judging from the picture it looks like a aftermarket outer cv to me at least. That could be your issue.
    VW/Audi Immobilizer removal and immobilizer adapting solutions for any and all VAG Vehicles, Odometer matching, SKC/Pin retrieval services/ Component Protection/Module Coding/Diagnosis Services and repairs.RB4/RB8 Specialist cloning and repairs. Located in Northern NJ. For inquries pm for details or contact me via Whatsapp
    Ziddy Autowerks

  5. #5
    Active Member Two Rings
    Join Date
    Mar 10 2015
    AZ Member #
    319714
    Location
    Alaska

    Quote Originally Posted by EuroxS4 View Post
    Judging from the picture it looks like a aftermarket outer cv to me at least. That could be your issue.
    Don’t know why it failed, the wheel bearing is bad perhaps heat buildup from that or maybe heat from hard braking caused the ring to expand just enough to come loose. The outer cv joint is oem as is the entire axel assembly. As for using loctite a couple concerns, the fit is pretty loose from reading about the stuff it will only fill a gap up to 1/4mm, second is I wonder if excess loctite gets in those windows will it be enough to affect the resistance reading from the sensor?

  6. #6
    Veteran Member Four Rings Gosser's Avatar
    Join Date
    Jun 05 2013
    AZ Member #
    116640
    My Garage
    2005 A4 1.8QMT, 2006 3.2 Sedan and Wagon auto, 2004 S4, 1990 300zx TTRHD, 1988 Buick Lesabre T-Type
    Location
    Ottawa

    I literally just went through this with my sisters driver front CV tone ring. The cause was from a failing wheel bearing, and the tone ring actually chewed into the aluminum upwright, and once it was separated, traction, abs lights were on and the speedo stopped working.

    We smeared JB weld all around the surface of where it mates to and its been good all week. Let it set up for at least 24 hours in a heated garage.
    2007 RS4 Avant
    2006 A4 2.7 MT Avant
    2007 A4 2.0 AT Avant
    2013 Q5 3.0 AT - Wifes

  7. #7
    Veteran Member Four Rings Kevin C's Avatar
    Join Date
    Mar 28 2015
    AZ Member #
    323385
    My Garage
    1987 Dodge Raider G54B Turbo
    Location
    Portland OR, United States

    Quote Originally Posted by akaudicq View Post
    Don’t know why it failed, the wheel bearing is bad perhaps heat buildup from that or maybe heat from hard braking caused the ring to expand just enough to come loose. The outer cv joint is oem as is the entire axel assembly. As for using loctite a couple concerns, the fit is pretty loose from reading about the stuff it will only fill a gap up to 1/4mm, second is I wonder if excess loctite gets in those windows will it be enough to affect the resistance reading from the sensor?
    Loctite won't affect the readings and it wont cure in the open windows. The rings are not typically on that tight. Based on the picture and my experience with loctite stud and bearing mount the ring would end up held very well. A freshly sanded surface sets the loctite faster.
    2003 02X Six speed swapped, RS4 RSB, H&R FSB, B7 brakes, 2.0T stroker, DSMIC's, B7 CTS K04 turbo.

  8. #8
    Active Member Two Rings
    Join Date
    Mar 10 2015
    AZ Member #
    319714
    Location
    Alaska

    Quote Originally Posted by Gosser View Post
    I literally just went through this with my sisters driver front CV tone ring. The cause was from a failing wheel bearing, and the tone ring actually chewed into the aluminum upwright, and once it was separated, traction, abs lights were on and the speedo stopped working.

    We smeared JB weld all around the surface of where it mates to and its been good all week. Let it set up for at least 24 hours in a heated garage.
    Cool. So I assume your abs is working did you get any JB oozing in the ring windows that you had to deal with?

  9. #9
    Active Member Two Rings
    Join Date
    Mar 10 2015
    AZ Member #
    319714
    Location
    Alaska

    Quote Originally Posted by Kevin C View Post
    Loctite won't affect the readings and it wont cure in the open windows. The rings are not typically on that tight. Based on the picture and my experience with loctite stud and bearing mount the ring would end up held very well. A freshly sanded surface sets the loctite faster.
    Thanks that may be the way to go. I think it will withstand up somewhere in the neighborhood of 500 degrees which should handle any braking heat transfer?

  10. #10
    Veteran Member Four Rings Kevin C's Avatar
    Join Date
    Mar 28 2015
    AZ Member #
    323385
    My Garage
    1987 Dodge Raider G54B Turbo
    Location
    Portland OR, United States

    Quote Originally Posted by akaudicq View Post
    Thanks that may be the way to go. I think it will withstand up somewhere in the neighborhood of 500 degrees which should handle any braking heat transfer?
    That part will never see 500°F, more like 140°F max. Its pretty well shielded. If it was getting that hot in that area your CV boots would be toasted. The molding temp for the CV boots is around 355-400°F.
    Last edited by Kevin C; 02-01-2020 at 04:32 PM.
    2003 02X Six speed swapped, RS4 RSB, H&R FSB, B7 brakes, 2.0T stroker, DSMIC's, B7 CTS K04 turbo.

  11. #11
    Veteran Member Four Rings Gosser's Avatar
    Join Date
    Jun 05 2013
    AZ Member #
    116640
    My Garage
    2005 A4 1.8QMT, 2006 3.2 Sedan and Wagon auto, 2004 S4, 1990 300zx TTRHD, 1988 Buick Lesabre T-Type
    Location
    Ottawa

    Quote Originally Posted by akaudicq View Post
    Cool. So I assume your abs is working did you get any JB oozing in the ring windows that you had to deal with?
    Yes, everything is working. We smeared the JB on the CV axle first, then slide the ring on. A bunch of jb oozed out obviously the back, so we just used out finder to tool it like a caulking joint. Some made it into the windows, but nothing excessive, like maybe 1/8 of the actual window has jb weld in it. If you are really worried, just get a q-tip and wipe them all out 100% clean.
    2007 RS4 Avant
    2006 A4 2.7 MT Avant
    2007 A4 2.0 AT Avant
    2013 Q5 3.0 AT - Wifes

  12. #12
    Veteran Member Four Rings Kevin C's Avatar
    Join Date
    Mar 28 2015
    AZ Member #
    323385
    My Garage
    1987 Dodge Raider G54B Turbo
    Location
    Portland OR, United States

    My take is that either JB weld epoxy of Loctite will work. Personal experience on slip fitted parts is that both will have good strength but the Loctite will have better toughness. The ring is pretty light and it has a lot of surface area so its not a big deal either way.
    2003 02X Six speed swapped, RS4 RSB, H&R FSB, B7 brakes, 2.0T stroker, DSMIC's, B7 CTS K04 turbo.

  13. #13
    Veteran Member Four Rings Dondbg's Avatar
    Join Date
    Mar 12 2016
    AZ Member #
    370140
    My Garage
    B6 S4 2005 manual swap
    Location
    The land of Kiwis

    I have a slightly dented ring and I searched and found that you can actually buy the ring itself, or may be head to a junk yard and get one, just make sure the slots count is the same.

    Still didn’t out mine back so if it didn’t work I will have to visit one of the above options.

  14. #14
    Active Member Two Rings
    Join Date
    Mar 10 2015
    AZ Member #
    319714
    Location
    Alaska

    So I ended up using JB Weld but not before I tested that and the Loctite 680 on a test piece. The JB filed a larger gap much better by virtue of it being a thicker material than the Loctite. On the test of gluing two pieces of flat metal together the JB welded one was much harder to pry apart. I took the car for a test ride today and the ABS worked flawlessly, thanks to everyone for your help!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


    © 2001-2025 Audizine, Audizine.com, and Driverzines.com
    Audizine is an independently owned and operated automotive enthusiast community and news website.
    Audi and the Audi logo(s) are copyright/trademark Audi AG. Audizine is not endorsed by or affiliated with Audi AG.