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  • Doh!!! Speedometer Failure!!!

    Just started this morning. When I'm driving the RPMS read just fine but the Speedometer reads 0, sometimes it will jump around but it will fall back to 0... Anyone know whats up?

    Is this a cheap fix I can do myself? I pray it is...
    1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

  • #2
    Sounds like a Vehicle Speed Sensor. They shouldnt be all that expensive and its not that hard to replace but it involves getting underneath the vehicle a fair bit. Its on the Transmission tailshaft where the driveshaft meets the tranny and its usually held in with a simple 10mm bolt. Just unplug it, unbolt it, put new one in bolt it in then plug it up and that should do it.
    1995 Arctic White Camaro. 3.4L/A4<br /><br />\"Stupid men make mistakes, wise men learn from mistakes\"

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    • #3
      Also I had the shifter console up the night before it happened as I was installing LED's, could I have jarred or messed something in here up?
      1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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      • #4
        Jumpy speedometers can also mean impending alternator failure
        2002 Silver Firebird A4<br />T-Tops, Leather, Y87, W68, Chrome Wheels<br />Bone Stock

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        • #5
          Originally posted by Rob Bell:
          Jumpy speedometers can also mean impending alternator failure
          But no other gauge is bouncing around... Just the Speedo... and I've driven for hours and hours it seems the car would have died by now...

          Are you sure it's the speedometer sensor in the tranny? From what I hear, if it's bad, you won't beable to shift out of 1st... I've beenable to cleanly shift in the A4...
          1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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          • #6
            definitely sounds like a vss. is yours a manual? when i put in amy jet scu2000 i used a crappy ground and it kept dieing on me, wouldnt even shift my auto. you need to undo anything you did the other day, and see what that helps.

            sounds like a half bad connection somewhere. its pretty much something you have to diagnose on your own.

            96 V6 A4 Camaro and 99 Z28 A4 Camaro
            Visit My F-Body Page

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            • #7
              Originally posted by Loochy88:
              definitely sounds like a vss. is yours a manual? when i put in amy jet scu2000 i used a crappy ground and it kept dieing on me, wouldnt even shift my auto. you need to undo anything you did the other day, and see what that helps.

              sounds like a half bad connection somewhere. its pretty much something you have to diagnose on your own.
              Okay VSS is the sensor in the transmission right and NOT the cable right? Also where does it ground to? Gimme a location because I don't know where code B12 is or anything like that. Does it ground under the Shifter Console? is the VSS anywere under the shifter console?
              1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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              • #8
                ...Also I banged on my dashboard and the speedometer moves around alittle... about 15 MPH increments... Nothing else moves... Is it normal for the speedo to fluctuate after banging on the dash?
                1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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                • #9
                  ttt
                  1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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                  • #10
                    Originally posted by Marty85:
                    Sounds like a Vehicle Speed Sensor. They shouldnt be all that expensive and its not that hard to replace but it involves getting underneath the vehicle a fair bit. Its on the Transmission tailshaft where the driveshaft meets the tranny and its usually held in with a simple 10mm bolt. Just unplug it, unbolt it, put new one in bolt it in then plug it up and that should do it.
                    I was under there and plain couldn't find it period... Not the plug or the VSS and I was looking around where the driveshaft meets the tranny. I looked from the tranny mount and came across a linkage between the tranny and the cat and an O2 sensor wire but I doubt seriously if it has anything to do with the speedo...
                    1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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                    • #11
                      http://www.camarov6.com/ubb/ultimate...969;p=1#000002 ;)
                      Matt
                      1998 Mystic Teal Camaro M5
                      Whisper Lid, Pacesetter Headers, Catco Cat, Dynomax Super Turbo, B&M Shifter, BMR STB, LSD, P&P Intakes, GT2 Cam, Comp OE Lifters, 1.7 Roller Rockers, Pushrods, SSM Heads, DHP PowrTuner.

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                      • #12
                        ....Okay something strange happened today...

                        I hit a bump and boom, Speedo works again like it never failed before. It's reading just fine and accurate like nothing happened. Anyone have a clue as to what just happened?

                        Are there any grounds whatsoever for the VSS or Speedo I need to be aware of? Where?
                        1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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                        • #13
                          Sounds like a loose connection somewhere. Could have been in the guage cluster or on the VSS itself. But anyway, glad its working again.
                          1995 Arctic White Camaro. 3.4L/A4<br /><br />\"Stupid men make mistakes, wise men learn from mistakes\"

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                          • #14
                            Pin pointed that it will only act up if the RIGHT SIDE of my car hits a bump. The left side has little to no effect... Any clues?

                            What I'm trying to figure out is if this is the VSS acting up or the Gauge cluster / PCM connection or maybe bad grounding...

                            [ May 08, 2005, 02:24 PM: Message edited by: Need4Camaro ]
                            1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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