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Old 07-03-2008, 11:15 PM   #1
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Question "Floating" speedometer

Recently I replaced the clutch in my car and also installed a phantom grip, so I had the tranny out and apart.
Now the car is back together and running fine except the speedometer needle is now "floaty".
The car itself isn't fluctuating speed, but the needle is moving +-2mph or so.
This is also affecting the cruise control.
The cruise is constantly adjusting the pedal due to the mph fluctuation so it's unusable.

The tachometer appears to be fine.

Any ideas appreciated.

Car is a 2006 Duratec 2.0 5 speed.


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Old 07-04-2008, 01:21 AM   #2
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never heard of that happening....
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Old 07-04-2008, 01:49 AM   #3
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Did you try disconnecting the negative battery cable for 10 minutes?
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Old 07-04-2008, 03:12 AM   #4
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Doesn't the speedo cable go into the tranny? Makes me think that when it was put back in it might not be in "just right" or such. I would either try and figure it out from there ... or find a local shop that specializes in speedo work.
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Old 07-04-2008, 10:23 AM   #5
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Did you try disconnecting the negative battery cable for 10 minutes?
I had it disconnected for about 10 days. :)
I'm also thinking it has something to do with the sensor.
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Old 07-04-2008, 11:44 PM   #6
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Originally Posted by HawkeyeFLA View Post
Doesn't the speedo cable go into the tranny? Makes me think that when it was put back in it might not be in "just right" or such. I would either try and figure it out from there ... or find a local shop that specializes in speedo work.

Well when you find a speedo cable let me know.



Until that time replace the Vehicle Speed Sensor and upgrade your engine ground.
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Old 07-05-2008, 01:12 AM   #7
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iminhell... awesome!

Indeed it is likely a bad VSS, might just be dirty as well...
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Old 07-05-2008, 08:46 AM   #8
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Dirty would be my guess after his description of the events before the problem.
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Old 06-28-2009, 10:31 PM   #9
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I found my problem today and it was as I suspected.
The pastic ring with metal points which the speedo sensor reads were bent/damaged.
I'm not even sure how it happened but it was a used diff.
It was not obvious either.
I ran my finger around them and felt that they were not all even with the plastic.
About half were offset, as if the diff was dropped and bent the metal.
I did not replace that ring.
I reinstalled my stock diff and just said goodbye to the Phantom Grip.
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Old 06-28-2009, 10:45 PM   #10
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Holy crap...11 months later lol
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