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speedo goes wacky

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Offline dwcrisp

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speedo goes wacky
« on: July 01, 2006, 07:29:50 AM »
Every now and then my speedo shows my speed to be about 2 times what it really is.  Happens only when I start the engine, not when I'm already in motion.  Reads twice what I'm actually going.   If I stop and turn off the engine and restart a few times then back up a few times it seems to correct itself.  Then sometimes it doesn't go back to normal and reads wrong all day.  Then next day it's fine.  No noises, no wobble or anything like that.

(98 Tracker 2dr soft top 4X4 auto with AC)

Anyone have a clue?
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Offline takai

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Re: speedo goes wacky
« Reply #1 on: July 02, 2006, 10:04:33 AM »
The VSS could have gone bad, or you could have a short.
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Offline Rhinoman

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Re: speedo goes wacky
« Reply #2 on: July 02, 2006, 10:14:32 AM »
It might just be a dodgy cable, there have been a few other posts like this in the past.
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Offline dwcrisp

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Re: speedo goes wacky
« Reply #3 on: July 02, 2006, 10:41:03 AM »
Update:  It doesnt affect the mileage on the odometer.  It also doesn't wobble when it does this either.

What does VSS mean?
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Offline Dark Negotiator

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Re: speedo goes wacky
« Reply #4 on: July 02, 2006, 12:29:39 PM »
mine does it constantly lol
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Offline da_tub

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Re: speedo goes wacky
« Reply #5 on: July 02, 2006, 07:25:14 PM »
vss= vehical speed sensor
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Offline dwcrisp

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Re: speedo goes wacky
« Reply #6 on: July 02, 2006, 09:09:01 PM »
OK where is it and what do I do about it?  Anyone know?
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Offline wildgoody

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Re: speedo goes wacky
« Reply #7 on: July 02, 2006, 11:10:29 PM »
There is a drag system in the needle mechanism,
sometimes a little piece of crap gets in there and
creates extra drag, and pulls the needle higher
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Offline bbagwell

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Re: speedo goes wacky
« Reply #8 on: July 05, 2006, 11:39:54 AM »
Mine has now settled on being 10 MPH slow.  Every once in a while it jumps around, spins around, makes a bunch of noise, then settles back to being 10 MPH slow.  I am just used to it, 45 = 55 etc...
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Offline Vagabond

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Re: speedo goes wacky
« Reply #9 on: July 05, 2006, 10:16:49 PM »
Quote from: dwcrisp on July 01, 2006, 07:29:50 AM
Every now and then my speedo shows my speed to be about 2 times what it really is.  Happens only when I start the engine, not when I'm already in motion.  Reads twice what I'm actually going.
If you're not in motion than you're going zero MPH.  Two times zero equals zero.  Thats what mine says when I'm not in motion.  I guess we have the same problem.
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