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    Thread: speedo / speedometer bouncing

    1. Member
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      02 VW Jetta GLS 1.8t
      04-24-2012 02:36 PM #1
      Well as the title says. The only catch was this was a manual. I searched quite a bit on the net and here with very limited and old results.

      Car Spec:
      Year- 2002
      Model- Jetta GLS
      Engine- 1.8t
      Transmission- 5spd manual

      Quick story-
      A month or so ago; Was driving on the freeway, was getting on the on ramp, got on it a little bit, (ashamed here, please dont bash too hard). My foot was faster then my hand and GRRRRIIINNNDDD!!! NOOOO!!! I quickly put the clutch back in and continued on my way with mostly what it seemed as no issues. Shortly after I noticed the speedometer bouncing a bit but hoped it would "correct iself". The rest of the drive to my destination and back was fine. Everything seemed OK.

      Every so often I would catch it (or thought I would) bouncing just a bit but couldn't get it to do it where I could watch. Last night on my way to work. It went crazy! Bouncing 5+ mph in either direction and cruise control was useless as it felt like someone was trying to give me whiplash. Driving without cruise control was smooth and whiplash free but the needle kept bouncing.

      Sooo... here I am today. I took a few (6 to be exact) and some pics of replacing the VSS (Vehicle Speed Sensor) on a manual transmission from the top.

      I was just wondering before I go and upload a bunch a pics nobody wants/needs. Is there an interest for this? Also, so far so good after replacement but it was only a short drive..

      Thanks,
      Outlaw


      **update**
      I drove it to work tonight (~20miles) using cruise 90% of the way there and it seems to be good for now. Going to monitor for a few days at least.
      Last edited by vwoutlaw; 04-25-2012 at 12:37 AM.

    2. Member
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      02 VW Jetta GLS 1.8t
      04-25-2012 01:34 PM #2
      *update*

      It was raining today, not that the weather conditions should effect this.

      On my way home from work today. It was working great til the on ramp of the freeway. No crazy acceleration or anything. The speedo needle dropped to 0 (not below). About half way through the drive, it started going crazy again. After the freeway (about 3/4 of the way) it dropped back to 0 and stayed there.

      I will let it sit until tonight and see if it works or is at 0 again.

    3. Member
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      02 VW Jetta GLS 1.8t
      04-26-2012 01:51 AM #3
      *update*

      Drove to work tonight and there were no signs of life.

      Speedometer, MPG, Odometer/Trip, Cruise not working.

    4. Member TheMel's Avatar
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      04-26-2012 04:55 AM #4
      Ensure the VSS gear is meshing properly. Check all wiring. Check for any blown fuses.
      Volkswagen: Folks-Vägen - noun -- Wind on wheels. Do it. Then post it.

      Quote Originally Posted by .Ant View Post
      Maybe you should use your seatbelt less. Aim for trees.

    5. Member
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      04-26-2012 07:19 AM #5
      Thanks.

      I will check it over when I get home. The connection from the wire to the sensor should be solid. I checked it over for any melting or fraying and it was all still in the "pouch". I can't say I followed it back though or checked the fuses.

      "Ensure the VSS gear is meshing properly"
      Not sure I can check the meshing. That may be for a different car? See below for pictures. It is just a square pin that sits down inside a square hole, then screws into the trans.

      New one on the left.


      New one on the right.


      I was hoping it was just the sensor. When I removed it from the trans, it rattled pretty bad with play left/right and up/down whereas the new one was nice and quiet with slight play left/right.

      Outlaw
      Last edited by vwoutlaw; 04-26-2012 at 07:54 AM.

    6. Member TheMel's Avatar
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      04-26-2012 08:42 AM #6
      Yes, different vehicle. I stand corrected.
      Volkswagen: Folks-Vägen - noun -- Wind on wheels. Do it. Then post it.

      Quote Originally Posted by .Ant View Post
      Maybe you should use your seatbelt less. Aim for trees.

    7. Member
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      04-26-2012 09:56 AM #7
      NP, thanks for trying.

      Also, while I wait for the engine to cool a bit and the carpet guy to get here and done. I somehow forgot to mention that the CEL is now on. I assume this is because the speedo isn't working at all now. Hopefully tomorrow I can get it put up in the air to better check where the sensor plugs into the trans and scanned. Today I will try to check fuses and trace wire. May need to wait til tomorrow to trace too though.


      Thanks,
      Outlaw

    8. Member Tcatt's Avatar
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      04-26-2012 10:25 AM #8
      when you go to check all wiring, specifically check the ignition wirirng harness.... I had simialar issues (speedo,tripometer, and fuel gauge would go back and forth) One of the wires that goes into a connector came out. After i plugged it back in, problem was solved.
      Quote Originally Posted by 10 Gauge View Post

      Put one dab in your peehole and squeeze for 5 seconds. This will keep you from reproducing.

    9. Member
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      02 VW Jetta GLS 1.8t
      04-26-2012 10:30 AM #9
      Thanks.

      When you say the ignition wire harness, where exactly am I checking that? Or does it merge with the speed sensor?

      Sorry, not car illiterate, just not sure where some of the stuff routes too/from. BTW, this is my first VW. May be the last. Not that i would sell for this reason alone, but I am looking to sell it for something that fits my requirements better. (not using this as an ad post)

      Thanks,
      Outlaw
      Last edited by vwoutlaw; 04-26-2012 at 10:36 AM.

    10. Member Tcatt's Avatar
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      04-26-2012 10:40 AM #10
      Quote Originally Posted by vwoutlaw View Post
      Thanks.

      When you say the ignition wire harness, where exactly am I checking that? Or does it merge with the speed sensor?

      Sorry, not car illiterate, just not sure where some of the stuff routes too/from.

      Thanks,
      Outlaw
      yes the ignition wiring harness actually has part of the VSS into it. http://forums.vwvortex.com/showthrea...wiring+harness

      refer to 2nd the last picture shown. Hope this will help
      Quote Originally Posted by 10 Gauge View Post

      Put one dab in your peehole and squeeze for 5 seconds. This will keep you from reproducing.

    11. Member
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      04-26-2012 11:01 AM #11
      If it is this,


      That is the speed sensor that I replaced. Unless I am looking at the wrong pic. Sorry, that was the second to last picture for me.

      Outlaw

    12. Member Tcatt's Avatar
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      04-26-2012 11:05 AM #12
      yup, check the wiring from the speed sensor all the up to the 7pin connector that is on the driver side fender. should be under or to the side of the battery
      Quote Originally Posted by 10 Gauge View Post

      Put one dab in your peehole and squeeze for 5 seconds. This will keep you from reproducing.

    13. Member
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      04-26-2012 11:49 AM #13
      Cool. Thanks for the info. Carpet guys are here now. Will have to see what I can find after.


      Thanks,
      Outlaw

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      04-27-2012 11:06 PM #14
      *update*

      Ok, well it turns out it wasn't the sensor. Or at least it wasn't only the sensor. lol.

      The shaft that goes down into the trans (i thought this was in the trans) is shot. The gear teeth are mash and the last 1/2" is missing.

      I'll get a few pics up but will do later. Just wanted to get an update here.

      Outlaw

    15. Member TheMel's Avatar
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      04-28-2012 06:54 AM #15
      Quote Originally Posted by vwoutlaw View Post
      ...The shaft that goes down into the trans (i thought this was in the trans) is shot. The gear teeth are mash and the last 1/2" is missing...
      Volkswagen: Folks-Vägen - noun -- Wind on wheels. Do it. Then post it.

      Quote Originally Posted by .Ant View Post
      Maybe you should use your seatbelt less. Aim for trees.

    16. Member
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      04-28-2012 12:21 PM #16
      Similar to what it should look like. (The part extending down after the splines is slightly different) This is for a 2.8L VR6


      Full shaft.


      Close up.



      Oh and had I seen this post here in the VR6 engine section, i wouldn't have had to buy a sensor first. I think it may still have been bad/going bad as it did sound like a rattle compared to the new one.

      http://forums.vwvortex.com/showthrea...t-workin.-Help

      Outlaw

    17. Member Tcatt's Avatar
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      04-28-2012 11:36 PM #17
      Pretty sure this looks the culprit of your problem to me...
      Quote Originally Posted by 10 Gauge View Post

      Put one dab in your peehole and squeeze for 5 seconds. This will keep you from reproducing.

    18. Member TheMel's Avatar
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      04-29-2012 01:52 AM #18
      X2

      I figured there was a gear somewhere but when you posted the picture of the sensor I had to back up a bit. I'll be doggone if I give incorrect advice. I appreciate you posting what you found, bud!
      Volkswagen: Folks-Vägen - noun -- Wind on wheels. Do it. Then post it.

      Quote Originally Posted by .Ant View Post
      Maybe you should use your seatbelt less. Aim for trees.

    19. Member
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      04-29-2012 05:14 PM #19
      lol. I'm hoping this is the only culprit. It appears to be a dealer only item and is 2 separate pieces. The part that is bad here is call the pinion.

      P# 02A-409-197
      Price- $15+tax

      Glad to help. Hopefully this will help others in the future. Like I said before, I thought the all of the gear stuff was inside the trans and only accessible when dropping the trans. After I got the car to my dads were we could get underneath and a better view, it was obvious that it could come out.

      Next up now is a fluid change to hopefully get as much of the pieces out and i don't know if that part that is broken in the trans is still in the hole or floating around somewhere...

      This is hopefully all that is wrong as I am selling it within the next couple of months to a family member.


      Thanks for the input so far guys
      Outlaw

    20. Member
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      05-02-2012 03:33 AM #20
      Picked up the pinion yesterday.
      Total: $12.15 including tax.



      Also note, the gear on the shaft which turns the pinion is also plastic. Worst case scenario would be that gear is damaged and needs replacing. You have to completely disassemble the trans to replace that gear. Fingers crossed this isn't the case.

      Outlaw

    21. Member
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      05-05-2012 10:35 PM #21
      BOOOO

      Good and bad news.

      Good news.
      got all the "chunks" out and changed the trans fluid. replaced the pinion.

      Bad news.
      Didn't fix.... still no speedo and fuel bouncing... Will need to see what the "hard part" will cost.
      I refuse to drop it.

    22. Member
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      05-14-2012 02:47 AM #22
      Just another update if anybody is watching.

      Replaced the pinion last weekend. No go.

      It free spins in the tranny. When we replaced the trans fluid, there were some plastic chunks and some metal

      It went to the trans shop friday where they said it would be ~600 to drop, inspect and put back without repair. It could cost up to 1200-1500 to fix.

      Their diagnostic- When drained, there were more metal shavings, looked like "curly cue" and when scoped, they could not locate the speedo drive gear which is on the shaft. They said it may have "disintegrated". Not sure if that is possible but I believe it "exploded" at some point in the transmission at the least.


      And it doesn't look like it will be getting sold after all.

      btw, while I was under the car, I found there is a hybrid oil pan... Good thing I am lowered and have this extra piece of mind! haha
      Last edited by vwoutlaw; 05-14-2012 at 07:54 AM.
      I refuse to drop it.

    23. Member Tcatt's Avatar
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      05-14-2012 01:09 PM #23
      i was kinda afraid that plastic gear got shredded. And I think that plastic gear is like 10 or 20 dollar part too
      Quote Originally Posted by 10 Gauge View Post

      Put one dab in your peehole and squeeze for 5 seconds. This will keep you from reproducing.

    24. Member
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      05-15-2012 04:29 AM #24
      Yeah, it blows big time.

      My dad and I were ready to do it ourselves based on part cost and location. After shop scoped it and found metal shavings, we didn't want to chance it with the limited tools we have.

      Part Number- 02A-409-187-B
      Price- $42.95 (with tax)

      #11 below is the speedometer drive gear. If it were just the gear needing replacement, it doesn't appear to be too hard to get at.


      Thanks,
      Outlaw
      I refuse to drop it.

    25. Member
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      05-15-2012 05:21 PM #25
      Well. got a call from the trans shop....

      There is only bad and worse news.
      The flywheel/clutch is shot
      The differential has 3 'severed' rivets in a row....

      Will eventually get pics up.



      Word of advise... Any and all possible transmission issues should be looked at immediately!!! I should have spent 700 to have it dropped and inspected when I first did it to know if it was something I did or covered up by the previous owner.
      I refuse to drop it.

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