Correcting speedo error
 

A GPS is as accurate at calculating your vehicle speed as is a 'certified'
speedo in a police car. So when the speedometer in my 2006 Liberty was
registering 107 kph when the GPS was showing 120 kph, I mentioned this at my
next service interval. The mechanic came up with a relatively easy fix. He
re-programmed the computer to make it think I had different sized tires on the
car. He got it dead on. However, the odometer still registers less kilometers
than the GPS records. I have verified the GPS odometer with the markers along
the highway.

Can anyone confirm that electronically altering the speedometer reading would
not necessarily change the odometer as well?

Thanks

Re: Correcting speedo error
 

<budman@frozenorth.ca> wrote in message
news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>
> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
> speedo in a police car. So when the speedometer in my 2006 Liberty was
> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
> my
> next service interval. The mechanic came up with a relatively easy fix.
> He
> re-programmed the computer to make it think I had different sized tires on
> the
> car. He got it dead on. However, the odometer still registers less
> kilometers
> than the GPS records. I have verified the GPS odometer with the markers
> along
> the highway.
>
> Can anyone confirm that electronically altering the speedometer reading
> would
> not necessarily change the odometer as well?
>
> Thanks
>

Of course it would alter the odometer too, it's part of the speedometer.
Maybe it would be a better idea to find the real problem.

Re: Correcting speedo error
 

<budman@frozenorth.ca> wrote in message
news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>
> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
> speedo in a police car. So when the speedometer in my 2006 Liberty was
> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
> my
> next service interval. The mechanic came up with a relatively easy fix.
> He
> re-programmed the computer to make it think I had different sized tires on
> the
> car. He got it dead on. However, the odometer still registers less
> kilometers
> than the GPS records. I have verified the GPS odometer with the markers
> along
> the highway.
>
> Can anyone confirm that electronically altering the speedometer reading
> would
> not necessarily change the odometer as well?
>
> Thanks
>

Of course it would alter the odometer too, it's part of the speedometer.
Maybe it would be a better idea to find the real problem.

Re: Correcting speedo error
 

<budman@frozenorth.ca> wrote in message
news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>
> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
> speedo in a police car. So when the speedometer in my 2006 Liberty was
> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
> my
> next service interval. The mechanic came up with a relatively easy fix.
> He
> re-programmed the computer to make it think I had different sized tires on
> the
> car. He got it dead on. However, the odometer still registers less
> kilometers
> than the GPS records. I have verified the GPS odometer with the markers
> along
> the highway.
>
> Can anyone confirm that electronically altering the speedometer reading
> would
> not necessarily change the odometer as well?
>
> Thanks
>

Of course it would alter the odometer too, it's part of the speedometer.
Maybe it would be a better idea to find the real problem.

Re: Correcting speedo error
 

<budman@frozenorth.ca> wrote in message
news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>
> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
> speedo in a police car. So when the speedometer in my 2006 Liberty was
> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
> my
> next service interval. The mechanic came up with a relatively easy fix.
> He
> re-programmed the computer to make it think I had different sized tires on
> the
> car. He got it dead on. However, the odometer still registers less
> kilometers
> than the GPS records. I have verified the GPS odometer with the markers
> along
> the highway.
>
> Can anyone confirm that electronically altering the speedometer reading
> would
> not necessarily change the odometer as well?
>
> Thanks
>

Of course it would alter the odometer too, it's part of the speedometer.
Maybe it would be a better idea to find the real problem.

Re: Correcting speedo error
 

Mike wrote:
> <budman@frozenorth.ca> wrote in message
> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
>> my
>> next service interval. The mechanic came up with a relatively easy fix.
>> He
>> re-programmed the computer to make it think I had different sized tires on
>> the
>> car. He got it dead on. However, the odometer still registers less
>> kilometers
>> than the GPS records. I have verified the GPS odometer with the markers
>> along
>> the highway.
>>
>> Can anyone confirm that electronically altering the speedometer reading
>> would
>> not necessarily change the odometer as well?
>>
>> Thanks
>>
>
> Of course it would alter the odometer too

And that would be illegal no?

Steve

Re: Correcting speedo error
 

Mike wrote:
> <budman@frozenorth.ca> wrote in message
> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
>> my
>> next service interval. The mechanic came up with a relatively easy fix.
>> He
>> re-programmed the computer to make it think I had different sized tires on
>> the
>> car. He got it dead on. However, the odometer still registers less
>> kilometers
>> than the GPS records. I have verified the GPS odometer with the markers
>> along
>> the highway.
>>
>> Can anyone confirm that electronically altering the speedometer reading
>> would
>> not necessarily change the odometer as well?
>>
>> Thanks
>>
>
> Of course it would alter the odometer too

And that would be illegal no?

Steve

Re: Correcting speedo error
 

Mike wrote:
> <budman@frozenorth.ca> wrote in message
> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
>> my
>> next service interval. The mechanic came up with a relatively easy fix.
>> He
>> re-programmed the computer to make it think I had different sized tires on
>> the
>> car. He got it dead on. However, the odometer still registers less
>> kilometers
>> than the GPS records. I have verified the GPS odometer with the markers
>> along
>> the highway.
>>
>> Can anyone confirm that electronically altering the speedometer reading
>> would
>> not necessarily change the odometer as well?
>>
>> Thanks
>>
>
> Of course it would alter the odometer too

And that would be illegal no?

Steve

Re: Correcting speedo error
 

Mike wrote:
> <budman@frozenorth.ca> wrote in message
> news:v7l4d3dda000p6j2ttiaec9b7chpl6srql@4ax.com...
>> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
>> speedo in a police car. So when the speedometer in my 2006 Liberty was
>> registering 107 kph when the GPS was showing 120 kph, I mentioned this at
>> my
>> next service interval. The mechanic came up with a relatively easy fix.
>> He
>> re-programmed the computer to make it think I had different sized tires on
>> the
>> car. He got it dead on. However, the odometer still registers less
>> kilometers
>> than the GPS records. I have verified the GPS odometer with the markers
>> along
>> the highway.
>>
>> Can anyone confirm that electronically altering the speedometer reading
>> would
>> not necessarily change the odometer as well?
>>
>> Thanks
>>
>
> Of course it would alter the odometer too

And that would be illegal no?

Steve

Re: Correcting speedo error
 

That would be odd, but there 'could' be two different calibrations in
the computer program.

I doubt anyone here has a factory manual for a Liberty to tell you for sure.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's - Gone to the rust pile...
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

budman@frozenorth.ca wrote:
> A GPS is as accurate at calculating your vehicle speed as is a 'certified'
> speedo in a police car. So when the speedometer in my 2006 Liberty was
> registering 107 kph when the GPS was showing 120 kph, I mentioned this at my
> next service interval. The mechanic came up with a relatively easy fix. He
> re-programmed the computer to make it think I had different sized tires on the
> car. He got it dead on. However, the odometer still registers less kilometers
> than the GPS records. I have verified the GPS odometer with the markers along
> the highway.
>
> Can anyone confirm that electronically altering the speedometer reading would
> not necessarily change the odometer as well?
>
> Thanks
>