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3 miles too fast!!!!!!!?

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Old December 13th, 2007, 9:34 PM
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Default 3 miles too fast!!!!!!!?

Today I noticed that my speedometer is going about 3 miles too fast at 65. Would be a speed senser problem or something else?
Its a '95 1500, 350, with a 3 speed automaticwith overdrive, 3.43 rear end.
Old December 13th, 2007, 10:06 PM
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Default RE: 3 miles too fast!!!!!!!?

Was this due to a radar screen that flashed your speed? If so, that would be the margin of error of your speedo combined with the margin of error of the radar.

If it is by GPS, again, your speedo has a margin of error built in to account for tire size changes and other anomolies.
Old December 14th, 2007, 12:11 AM
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Default RE: 3 miles too fast!!!!!!!?

Unfortunatly it was both, both the GPS and the radar told me I was off by the same amount. When I use the GPS in my other car both it and my speedo match up perfect.
Old December 14th, 2007, 12:13 AM
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Default RE: 3 miles too fast!!!!!!!?

Sorry, forgot to mention that the tires are the stock size.
Old December 14th, 2007, 5:26 PM
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Default RE: 3 miles too fast!!!!!!!?

Its 13 years old its prolly just off a bit.......and are you sure the tires are stock....I cant remember what size they came stock in 95....
Old December 14th, 2007, 7:44 PM
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Default RE: 3 miles too fast!!!!!!!?

I am pretty sure. how hard are these speedsensors to replace?
Old December 15th, 2007, 9:22 AM
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Default RE: 3 miles too fast!!!!!!!?

Below is a link to a site that has the information that you need to recalibrate your speedo.

http://www.tbichips.com/drac/
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