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speedo bounce

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Old 09-02-2008, 01:27 PM
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speedo bounce
i have a 94 pickup and i noticed that every now and then the speedo and tach will jump and inch or two. any ideas?
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Old 09-02-2008, 02:10 PM
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My speedo would bounce, turns out the VSS wasn't in tight enough.

Not sure about the tach though - my first guess would be a bad ground.
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Old 09-02-2008, 02:15 PM
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My speedo bounces around a little... I just chocked it up to the old cable system...
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Old 09-02-2008, 02:59 PM
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i was just so happy this was not a link to a video
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Old 09-02-2008, 03:09 PM
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at 60-70, my speedo in my truck bounces +/-5 MPH on a bad day. some days only about 1 MPH. mine is an old cable driven speedo though. with a VSS I would say its loose.
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Old 09-02-2008, 03:18 PM
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If I turn the key off real slow, the tach jumps to about 3,000 RPM. Or if I have the stereo up too loud, the speedo jumps a small bit.
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Old 09-02-2008, 03:23 PM
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Originally Posted by Jay351
My speedo bounces around a little... I just chocked it up to the old cable system...
Originally Posted by lftd_86_yota
i was just so happy this was not a link to a video
too bad this is a serious thread
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Old 09-02-2008, 04:26 PM
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Screw you Abe
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Old 09-02-2008, 06:27 PM
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Originally Posted by Jay351
Screw you Abe
not after hearing about you chocking your speedo
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Old 09-02-2008, 06:53 PM
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ooooooooooohhhhhhhhhhhhhhhhh
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Old 09-02-2008, 06:56 PM
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how do you chock up to old cables anyways? is that some sort of pulley / block setup or something that keeps your speedo stable?
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Old 09-02-2008, 08:38 PM
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Originally Posted by abecedarian
not after hearing about you chocking your speedo
nice one abe... on a side note, mine jumps too... i just figure that if it says im goin between 63 & 67 im good for the freeway...
but it could also be that you just need to grease the cable...
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Old 09-02-2008, 09:07 PM
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if it's a cable operated speedo, then maybe the cable needs lubed.
if not, it could be the speed sensor, wiring, grounds, the gauge... who knows without testing it all?


and thanks.
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